the huawei executive is on her _ the huawei executive is on her way . _ the huawei i executive is on her way home _ the huawei - executive is on her way home to china from canada after a deal was struck to drop the charges against her. she has been fighting extradition from canada to the us for german political parties are holding the final rally is ahead of elections in successor to angela merkel will be chosen. the chancellor has urged voters to choose her conservative alliance to keep germany stable. president biden has been meeting the leaders of india, australia and japan at the white house. the quad group is seen as the continuing effort to counter china's growing influence. the latest eruption at a volcano on the palm have prompted more people to be evacuated from homes. a huge column of ash leaned over the spanish islands and explosions could be heard.

now on bbc news, it is time for click. this week, the plant with the secret in its seeds. a plane that can fly itself and, dinner is served. and it is an acquired taste. in the middle of the otherworldly landscape of iceland, something strange is going on. 130,000 barley plants are slowly making their way from one end of this greenhouse to the other. what is even

stranger is what this barley is going to be used for. it is in the food chain, but it's not food for us and it's not food for animals. food for us and it's not food foranimals. no, this is something much, much weirder than that. this grass is host. it has been genetically modified to carry a special protein called a growth factor in its seeds. 0nce protein called a growth factor in its seeds. once the plants reach the end of theirjourney, these seeds are harvested, milled and purified and the resulting growth factor protein can be used to help produce something very unexpected. meat, in a lab without the animals. i meat, in a lab without the animals-— meat, in a lab without the animals. ~' ., ., animals. i think we have to have it- — animals. i think we have to have it. the _ animals. i think we have to have it. the earth - animals. i think we have to have it. the earth is - animals. i think we have to have it. the earth is not. animals. i think we have to i have it. the earth is not going to grow, we are not going to get more out of an agriculture

area. the population is rising and we have to feed all of the people. and we have to feed all of the eo - le. . ., people. the argument for curowin people. the argument for growing meat _ people. the argument for growing meat in - people. the argument for growing meat in labs- people. the argument for i growing meat in labs without living animals is that the process will eventually require less land, less energy and produce a less harmful waste. and it takes more agricultural land to grow feed for the animals that we eat. we are essentially bypassing that. so we don't have to kill all these animals, wejust have we don't have to kill all these animals, we just have to take the stem cell from them and i think this is a more viable and a much better option. companies using cow stem cells to grow lab grown beef burgers and steak are already trying out growth factors made in iceland. although the first ever growth factors came from animals, it is hoped this barley plant method will be cheaper and

scalable because nature can do a lot of the heavy lifting. but at the moment, research is still on going to come up with the barley that produces the very best growth factors, which is why the volcanic and geothermal peculiarities of iceland are an ideal place to experiment with different growing conditions. they are growing conditions. they are growing the barley in this, volcanic pumice from mount hekla, somewhere over there. it hekla, somewhere overthere. it is inert, it doesn't release any nutrients into the plants, so these guys can control the nutrient mix the barley gets. we are in a high—tech greenhouse that is using geothermal energy for heating and for the electricity. we are using cultivation and the computer decides when to open the windows, went to turn off the windows, went to turn off the lights, went to plant in c02, what nutrition to feed

these plants and so forth. eventually, these carefully programmed plants will have to be harvested in regularfields to produce enough growth factor for a global lab grown industry. and barley specifically has been chosen because it can be grown in many different climates and it doesn't cross pollinate with other plants around it. ah, other plants around it. typical farm in iceland, which typicalfarm in iceland, which is about 150 hectares, could actually produce about 10,000 tonnes of meat.— tonnes of meat. that is if lab crown tonnes of meat. that is if lab grown meat _ tonnes of meat. that is if lab grown meat is _ tonnes of meat. that is if lab grown meat is indeed i tonnes of meat. that is if lab grown meat is indeed the i grown meat is indeed the answer. after all, aren't we supposed to be old eating more greens? well, not too far away, another company is tapping into eyes in's geothermal power to put us on an altogether different diet. this is food for us, at least it will be one day. it's not something we are currently used to eating, mind you. but tastes

change. it is algae. it sounds kind of horrible, but the microalgae grown in these test units are rich in protein and omega three. and they consume fewer natural resources, too. in these systems, we can grow a tonne of protein and using three, four, 500 times less water and 1a, 1500 times less land than the best thing than we know today.— land than the best thing than we know today. because algae is a lant, we know today. because algae is a plant. it _ we know today. because algae is a plant. it has— we know today. because algae is a plant, it has another— a plant, it has another environmental benefit. photosynthesis. we environmental benefit. photosynthesis. environmental benefit. photos nthesis. ~ photosynthesis. we get the c02 from the plant. _ photosynthesis. we get the c02 from the plant, we _ photosynthesis. we get the c02 from the plant, we inject i photosynthesis. we get the c02 from the plant, we inject that i from the plant, we inject that into our system, use algae to fix the c02 into biomass and they breathe out oxygen. so

oxygen is actually our only by—product of this plan. oxygen is actually our only by-product of this plan. which is not a bad — by-product of this plan. which is not a bad by-product, i is not a bad by—product, really? is not a bad by-product, reall ? . ., ., , really? the health authorities don't seem — really? the health authorities don't seem to _ really? the health authorities don't seem to mind. - don't seem to mind. laughter. so right here in geothermal iceland where electricity and hot water are essentially green, green and on tap, growing this algae ends up being carbon negative. it fills more c02 out of the environment than the electricity puts back in. but in order to feed the world, these algae farms would need to be placed around the globe and not everywhere is on top of a volcano. the globe and not everywhere is on top of a volcano.— top of a volcano. the system itself is always _ top of a volcano. the system itself is always carbon i itself is always carbon negative because we take in c02, we fix it in biomass and we breathe out oxygen. if you are having _ we breathe out oxygen. if you are having to _ we breathe out oxygen. if you are having to use _ we breathe out oxygen. if you are having to use electricity i are having to use electricity thatis are having to use electricity that is generated through coal, then the system is generating c02 as well unless you connect a pipe from the power station straight back into the algae and suck it back in?-

straight back into the algae and suck it back in? that is a possibility- _ and suck it back in? that is a possibility. that _ and suck it back in? that is a possibility. that is _ and suck it back in? that is a possibility. that is what i and suck it back in? that is a possibility. that is what we l possibility. that is what we are doing right now. these guys, they need c02, so we could take whatever c02 into the system, theoretically. in fact, he is thinking further ahead thanjust fact, he is thinking further ahead than just improving the environment here on earth, growing food in small spaces with limited water and producing oxygen as a by—product seems like a useful thing to do, i don't know, in a moon base or on mars. if the colonists can stomach it, that is. let me ask you a question, what does algae taste like? basically the medium it is in. this is a cold sea water algae, so it is salty. the problem is, this one is fairly robust. bi; this one is fairly robust. by fairly robust, you mean it is tough to tu? fairly robust, you mean it is tough to tn?— fairly robust, you mean it is tough to to?— fairly robust, you mean it is tough to tu?_ fairly robust, you mean it is tough to tu?- i i

fairly robust, you mean it is| tough to tu?- i have tough to tu? yes it is. i have been made _ tough to tu? yes it is. i have been made an _ tough to tu? yes it is. i have been made an offer- tough to tu? yes it is. i have been made an offer i i tough to tu? yes it is. i have been made an offer i can't i been made an offer i can't refuse. he said, do you want to drink some algae? 0f refuse. he said, do you want to drink some algae? of course i would. 0h, drink some algae? of course i would. oh, my life! for real? are you having a laugh? i would. oh, my life! for real? are you having a laugh?- are you having a laugh? i can do it first- — are you having a laugh? i can do it first. yes, _ are you having a laugh? i can do it first. yes, it _ are you having a laugh? i can do it first. yes, it is - are you having a laugh? i can do it first. yes, it is fishy. i do it first. yes, it is fishy. yeah. needs _ do it first. yes, it is fishy. yeah. needs a _ do it first. yes, it is fishy. yeah. needs a little... i do it first. yes, it is fishy. i yeah. needs a little... what are called, a lie down afterwards, that's it. maybe it will take a more creative chef than me to be able to sell the straight onto the plate. nobody is auoin straight onto the plate. nobody is going to _ straight onto the plate. nobody is going to eat _ straight onto the plate. nobody is going to eat algae _ straight onto the plate. nobody is going to eat algae taste. i is going to eat algae taste. that is not the idea. what we are doing, we are growing the crop and then we will use this crop and then we will use this crop to make food. you

crop and then we will use this crop to make food.— crop to make food. you get soy-based _ crop to make food. you get soy-based stuff, _ crop to make food. you get soy-based stuff, don't i crop to make food. you get| soy-based stuff, don't you? soy—based stuff, don't you? yes, it is not like you are taking the soy plant and then eating it, you make stuff out of the protein. i eating it, you make stuff out of the protein.— of the protein. i have solved our of the protein. i have solved your problem. _ of the protein. i have solved your problem. in _ of the protein. i have solved your problem. in posh i your problem. in posh restaurants, you have your main course and you have it in a red wine jus, course and you have it in a red winejus, which is basically just gravy. then you could charge £100 per plate. i like it. hello, — charge £100 per plate. i like it. hello, here— charge £100 per plate. i like it. hello, here is— charge £100 per plate. i like it. hello, here is your i charge £100 per plate. i like it. hello, here is your tech l it. hello, here is your tech news round-up. _ it. hello, here is your tech news round-up. it - it. hello, here is your tech news round-up. it was i it. hello, here is your tech | news round-up. it was their news round—up. it was their weak china's version of tick—tock would limit the use of the platform for users under 14 to 40 minutes a day. the eu is changing the charge of the headphones and netflix has bought the rights to all of roald dahl�*s books. a week after apple showed off the new iphone 13,

after apple showed off the new iphone13, and watch series seven, it was microsoft's turned to tempt us with their shiny wares at the event. there is a new surface pro eight, a new laptop and a new phone call the surface duo too. students from the netherlands have set off on a 3000 kilometre road trip in what they claim is a well�*s first self sustaining house on wheels. the concept, home, has something on its roof to harvest energy to power the vehicle, making it fully self—sufficient. they are taking part in the european solar tour which raises the need for sustainable travel. and finally, nasa has chosen the site for its moon rover landing near them in's south pole. it will attempt to find water ice on the western side. the moon's south pole is one of the coldest parts of the solar system. i am looking forward to

seeing the dark side of the moon. is it isita is it a bird? is ita bird? is ita plane? it is a... bird plane. iam is ita bird? is ita plane? it is a... bird plane. i am at a maritime innovation hub in recchi vic and i'm being taught how to command the silent fly. it's kind of really relaxing just watching it. engineer peter, helped by his daughter is the technical lead to behind a new kind of drone. why have you built a bird drone? surveillance, where it is important to not have intrusive device, but something that is quite, it can be hidden in the

flock of birds if you are thinking of wildlife monitoring. we have had enquiries also from the defence secretary. by enquiries also from the defence secreta . �* , . ~ ., secretary. by mimicking nature, it is hoped _ secretary. by mimicking nature, it is hoped this _ secretary. by mimicking nature, it is hoped this drone _ secretary. by mimicking nature, it is hoped this drone will- secretary. by mimicking nature, it is hoped this drone will be i it is hoped this drone will be able to flat by unnoticed. actual tests are not scheduled until next summer. it might be a little while before this bird starts to fly, but in the skies above san francisco, there is an aircraft which is currently flying itself. and on board, is cody godwin. the streets of san francisco are home to many self driving cars, so naturally the sky above the city is home to a self flying plane. this is a company that has developed an autonomous flying system that handles everything from taxing to take off, to london, to parking. the system is similar to self driving cars and uses a lot of the same tech, like

cameras and sensors to navigate the skies. while a command centre on the ground helps the autonomous system communicate with the humans in air traffic control. now i am suited and booted, lets see this thing in action. this is basically a beta version of what they are working on, which means it will require a safety pilot on board. but the company is working to be entirely autonomous, which means none of these by the end of next year and they are looking for faa certification. all the human pilot on board has to do is physically turned the plane on, check all systems are go and press the button activates the autonomous system. then it is “p autonomous system. then it is up to the plane, it does have to liaise with the human in the ground control centre making daily—macro while it is making its way to the runway. but that is just to make sure it is safe to cross certain parts of the strip. during take off, it is

almost like a ghost is in control because all the parts are still moving, but i am not seeing what is moving them. build as many robots as you want, they all do the same thing, right? want, they all do the same thing. right?— thing, right? some of the sensors — thing, right? some of the sensors and _ thing, right? some of the sensors and cameras i thing, right? some of the sensors and cameras are | thing, right? some of the i sensors and cameras are picking up sensors and cameras are picking up is augmented from a real—time view which is mounted on the exterior of the plane. the purple bits to the site are other planes in the area while the blue lines in front of the plane is the flight path. 0n the way back, the team decided to let me fly the plane. you are taking _ to let me fly the plane. you are taking control— to let me fly the plane. you are taking control of- to let me fly the plane. you are taking control of the i are taking control of the aeroplane. he doesn't know what you are doing. i aeroplane. he doesn't know what you are doing-— you are doing. i don't know what i'm — you are doing. i don't know what i'm doing. _ you are doing. i don't know what i'm doing. after i you are doing. i don't know what i'm doing. after a i you are doing. i don't know. what i'm doing. after a quick lesson i was flying a plane for the first time ever. i was just controlling the direction and the altitude, but it was a lot of fun. they let me go as far as a 45 degrees tilt. aeroplanes have been equipped with autopilot systems for years, but this takes it to the next level. if i was just a

passenger in this plane, i would never known it was being flown autonomously. the ride, take—off and landing was as smooth as any other flight i have been in. a lot of what makes it possible is the control room. the goal is to eventually have one person overseeing a fleet of flights and translating any instruction from the humans in air traffic control to the computer is flying the planes. this particular plane took its first autonomous flight in december of 2019 and since then, x—wing has been building up the system since. right now they're planning to use the system is to transport cargo.— to transport cargo. next is to fly commercially, _ to transport cargo. next is to | fly commercially, unmanned, to transport cargo. next is to i fly commercially, unmanned, so no one on board the aircraft. but over populated areas, so if you are flying cargo, you are not putting anybody�*s life in danger on the aircraft and if you are flying over unpopulated areas, you are not putting anyone on the ground is in jeopardy. anyone on the ground is in jeopardy-—

anyone on the ground is in “eoard. ., jeopardy. the system as a way to make everything _ to make everything cost—effective. it is uncharted territory, but to make it this far it has proved to the faa that it far it has proved to the faa thatitis far it has proved to the faa that it is possible and also it is safe. i have always wanted a pilots licence, but maybe tech like this will mean i will never need to. but we are far from having it approved by the faa for unmanned aircraft. drone is built of this country house in chichester don'tjust hover above the backyard. a ground—breaking new license means pilots can fly these aircraft from hundreds of miles away. typically, drones are not allowed to be flown outside the line of sight of the operator and even when this does happen, regulators only give permission for specific flights on a specific date and for a specific date and for a specific cause. back could be

about to change. the company based he hasjust been about to change. the company based he has just been granted the uk passed my first ever blanket license to make beyond out of sight flights at a moment's notice. the pioneering flights rely on autonomous systems. flights rely on autonomous systems-— flights rely on autonomous s stems. _ , ., ,, systems. our system maps the world in sd — systems. our system maps the world in 3d real-time - systems. our system maps the world in 3d real-time and i world in 3d real—time and understands the 3d world and its position in the world. it can allow the pilot to stand back, give instructions, stand back, give instructions, stand back and observe. it back, give instructions, stand back and observe.— back, give instructions, stand back and observe. it has mapped the house already. _ back and observe. it has mapped the house already. the _ back and observe. it has mapped the house already. the drone i back and observe. it has mapped the house already. the drone is i the house already. the drone is auoin to the house already. the drone is going to turn — the house already. the drone is going to turn and _ the house already. the drone is going to turn and the _ the house already. the drone is going to turn and the camera i going to turn and the camera will have a look.— will have a look. what is the difference — will have a look. what is the difference between - will have a look. what is the difference between flying i will have a look. what is the difference between flying it | difference between flying it from in here remotely and without the line of sight, than it would be if you stood outside? ii it would be if you stood outside?— it would be if you stood outside? , ., ., , ., outside? if you are flying on an oil rig — outside? if you are flying on an oil rig or _ outside? if you are flying on an oil rig or on _ outside? if you are flying on an oil rig or on a _ outside? if you are flying on an oil rig or on a long i outside? if you are flying on an oil rig or on a long piecel an oil rig or on a long piece of infrastructure, you don't have to keep walking along and looking at the drone as you move. you don't need a trained pilot travelling to each eye, they can be in an office like this, focused on what they are doing without the distraction of the wind and rain.- doing without the distraction of the wind and rain. drone is fitted with —

of the wind and rain. drone is fitted with cameras _ of the wind and rain. drone is fitted with cameras or i of the wind and rain. drone is| fitted with cameras or sensors are particularly useful at locations where it is dangerous for humans to be. part of sellafield plant and the rail network have been survey from afar. 40 miles away, remote—controlled drones are helping with renovations in surrey. it helping with renovations in surre . , , surrey. it gives us the opportunity _ surrey. it gives us the opportunity to - surrey. it gives us the opportunity to have i surrey. it gives us the i opportunity to have fewer pecule _ opportunity to have fewer people on site, fewer people is less risk, — people on site, fewer people is less risk, which is a massive plus— less risk, which is a massive plus in— less risk, which is a massive plus in busy construction sites _ plus in busy construction sites. the capabilities of it mean _ sites. the capabilities of it mean we _ sites. the capabilities of it mean we can cover large areas quicker— mean we can cover large areas quicker and it is also more reactive _ quicker and it is also more reactive. being able to set a certain— reactive. being able to set a certain task and check a beam or check— certain task and check a beam or check a _ certain task and check a beam or check a concrete finish or just— or check a concrete finish or just check— or check a concrete finish or just check the view from above is really— just check the view from above is really key. just check the view from above is really key-— is really key. later down the line, is really key. later down the line. drone _ is really key. later down the line, drone delivery - is really key. later down the line, drone delivery of- line, drone delivery of medicine oh online shopping may have the bigger impact on our day—to—day lives, but industrial sites are a great place to prove the systems are safe. i really want to press

it. ii safe. i really want to press it. , ., ., ., it. if the pilot on the ground becomes — it. if the pilot on the ground becomes incapacitated i it. if the pilot on the ground i becomes incapacitated somebody just needs to press that button and the drone comes home safely. and the drone comes home safel . ., , ., and the drone comes home safel. ., , ., , and the drone comes home safel. ., , ., safely. lots of companies are workin: safely. lots of companies are working with _ safely. lots of companies are working with the _ safely. lots of companies are working with the uk's i safely. lots of companies are | working with the uk's aviation regulator shaping rules that may one day permit drones to transport human passengers. the software transport human passengers. iie: software doesn't know if it transport human passengers. i“ie: software doesn't know if it is carrying a camera or a human in a drone taxi. we will start with simple cases, then we will end up withjetsons and flying cars. end up with jetsons and flying cars. �* ., ., cars. after going on the simulator, _ cars. after going on the simulator, i— cars. after going on the simulator, i don't i cars. after going on the simulator, i don't think| cars. after going on the | simulator, i don't think i should be flying any precious cargo. i don't think i will be coming for anyone'sjobs anytime soon. i am nervous, even though i know it isn't real. trying to get through here without crashing... a bit more practice needed, paul. 0n more practice needed, paul. on a similar theme, let's talk about how your deliveries are going to be dropped off in the

future. will it be by drone, by a delivery bot or still by an overworked human driver? well, we have found a way to combine all three. the academy of robotics have created cargo, a self driving electric delivery vehicle. it is fully legal and houses 12 cameras and the number of sensors to tell where it is going. not to mention it features a slew of solar panels to constantly power and charge it up. in this version of the car that is an operator make sure everything is running well during the dry. that will be phased out once they can remotely connect to the car with confidence. but even so, the company says it only takes one to pass to an area before it learns it and then it can drive around comfortably with no help. we are told this thing can deliver up to 48 packages a day and hit up to 60 miles an

hour. but we will not see that speed here, as we follow it to a local neighbourhood during its trial run. itjust looks like a really small racing car, but with a whole lot of green plastic trim. it doesn't really matter about how it looks, it is about how it functions and right now it is functioning fine, going down the route, driving well, avoiding the parked cars, it is impressive. it almost looks like someone is driving it! it then completed its run of deliveries with no trouble at all. but this isn't the only vehicle they have created. the company needs a command base to control everything from as well, remotely connect to the car and make sure everything is going all right, intervene if need be. they have put that on wheels, too. inside is a system built to process what their courses in real—time, a driving seat someone can manually take control of a car if need be. even space for want to be loaded up and moved, once it is

done. but this was a late innovation. before else, the company spent three years focusing on just software. focusing on “ust software. most cars are focusing on just software. most cars are looking _ focusing on just software. most cars are looking at _ focusing on just software. most cars are looking at the - focusing on just software. most cars are looking at the road i cars are looking at the road and they look at one scene and then figure out what everything is doing. but when we are driving as humans, your eyes are darting from that feature over there, you zoom in and you zoom out and you do all these little things. we simulated that in the software will we make a cluster of artificial intelligence that do a lot of things and then together they synchronise.— synchronise. how they train them is not _ synchronise. how they train them is not typical i synchronise. how they train them is not typical either. l them is not typical either. instead of gathering tonnes of data to teach them, they fake are many driving possibilities to teach the car. this isn't the only self driving delivery car out there, over in the states, they also have their own vehicles. quite similar in the way they look, work and drive about like cargo does.

but the company is looking to do more than delivered to people's homes. we are on the raf brize norton base, watching as their car delivers items across the massive site. for security reasons, the company couldn't scan the base as it normally would a neighbourhood. but they have got around that. they have preloaded it with pre—existing data from similar sites and fine tuned it to this similar set sites and fine tuned it to this similarset up, like sites and fine tuned it to this similar set up, like where certain places are, and this traffic light here means stop. coupled with the on—board cameras and sensors can go across the relatively unknown site without any pre—training. the self driving car has a lot of promise, potentially the future of delivery for consumers and businesses, too. but we humans still needed to be behind the wheel for safety�*s sake. it may be awhile before we see these our roads. i am afraid that is it from us

here in iceland. don't forget you can find out what we're up to on social media. we live on youtube, facebook, instagram and twitter. thanks for watching and we will see you soon. hello. on friday, we saw temperatures in 0xfordshire up to 25.3 celsius, well above average for this stage in september. and through the weekend, we're going to be keeping the fairly warm, mainly dry theme with some sunshine around. now, the reason that temperatures are doing so well at the moment is because we're drawing in our winds from a south or south—westerly direction, so fairly tropical air in fact pushing across the uk. and if we compare the forecast temperatures to average for this time of year,

in fact, they're about 5—6 degrees above average through the weekend. fast—forward now into the middle of next week, and you can see the reds and oranges have disappeared from the map, so temperatures will be average or even a little below by the time we get to around about tuesday next week. but for the here and now, we're going to be starting saturday morning on a mild note, with temperatures in the mid—teens. quite a lot of mist and murk, and in fact some areas around coasts and hills in the west could keep some fog all day, but it will gradually lift and clear and things will brighten up. so, some sunshine appearing, particularly for the likes of north wales, central and eastern england and eastern scotland, too. so, temperatures in the warmest spots, 22—23 degrees, but even where you have got the cloud, still 18—19 celsius. a bit breezy with the odd spot of drizzle for the west of scotland, but most other places avoiding any showers. as we move through the overnight period and on into sunday, there could just be one or two spots of showery rain here and there, but most places again looking largely dry and temperatures staying in the mid—teens again as we head on into sunday. so, no great changes for the weather. we have got a weather front waiting in the wings here.

as it moves a little bit closer in, you'll start to notice the breeze picking up a touch on sunday. still from a southerly direction, a warm wind direction, so a lot of drier weather, probably a bit more sunshine on sunday compared to saturday. one or two rogue showers, rain later in the day arrives from the west across northern ireland and western scotland. but before it gets there, well, temperatures once again doing pretty well, 22—23 degrees for the warmer spots, well above average on sunday. but then let's take a look at sunday night into monday then. this weather front sweeps its way eastwards across the uk, so that is going to be marking that change into cooler air as we head through the early part of next week. weather fronts moving in from the atlantic, introducing notjust cooler air, but more unsettled weather as well. so, into next week, blustery showers, not as warm as it has been. do enjoy the warm sunshine if you see it through the weekend. bye for now.

as an welcome to bbc news. create a our top stories. clear huawei executive mung wan—jo is on her way home to china from canada, after a deal was struck to drop it was a disruptive time for me as a mother, a wife and a company executive. we're in the final days of campaigning for sunday's german election. europe's largest economy is gearing up to choose angela merkel�*s successor we have a special report on the ground in texas — as president biden takes responsibility for the treatment of haitian migrants at the southern border. the uk government plans a temporary visa scheme to make it easier for foreign lorry drivers to work in britain as fuel supply problems mount.