a suspected terror plot thought to be planned for christmas is foiled, as police arrest four men in derbyshire and south yorkshire. hundreds of people were moved from their homes, as the bomb squad was sent to one address in chesterfield. they come banging on the door saying, "you need to evacuate." my grandad refused to leave the house. he's still in there now. the only one on the street. and they said, "it's for your own safety, bomb disposal are here." in the last hour, bomb disposal experts have moved to another property in sheffield. we've have the latest on the ongoing operation. also on the programme tonight... social media companies taken to task by mps in parliament, as they're accused of not doing enough to tackle hate crime. killed in the hotel fire at loch lomond — richard dyson and simon midgley were staying at the cameron house hotel for a weekend break. the future of toys r us and more than 3000 jobs in the uk hangs in the balance tonight, amid fears it's about to collapse. and the 95 year—old librarian who is one new york's oldest employees —

we report on the superagers, as scientists say they're close to finding drugs to delay the ageing process. coming up on sportsday on bbc news: suspicion hangs over sprinter justin gatlin amid doping allegations involving two of his associates. good evening. police have arrested four men in south yorkshire and derbyshire, as they swooped in to disrupt a suspected islamist terror plot planned for christmas. armed officers made the arrests early this morning at four separate addresses, using stun grenades. the army bomb disposal unit was called to a row of shops in chesterfield.

more than a hundred people have been evacuated from their homes. tonight, the bomb squad has just arrived at another address in sheffield. with the latest, here's our correspondent, danny savage. on a terraced street in chesterfield today, army bomb disposal experts were looking for explosives. they have been here for hours. counter—terrorism officers arrested a 31—year—old man here this morning. in the predawn darkness, armed police were pictured guarding the scene as the raid took place. at the edge of the cordon, people evacuated from their homes couldn't believe what was happening in their streets. they come banging on the door saying, "you need to evacuate." my grandad refused to leave the house. he's still in there now. the only one on the street. and they said, "it's for your own safety, bomb disposal are here." they made everyone else leave apart from him. how does it feel that this is happening in your neighbourhood? in a way it's a bit scary, bit weird, isn't it? you don't expect things like this to happen in chesterfield,

or in a little area like this. so it's a bit worrying in a way. arrests were made elsewhere too, as police took action against an alleged islamist terror plot against the uk that could have come to fruition over christmas. although the most obvious activity was in chesterfield, about 15 miles away in the burngreave area of sheffield, two other men were arrested. a business was raided, and another man was arrested in meersbrook, where local people heard stun grenades being used. we were woken up at about 5:30 by a really, really loud bang. initially we did think that somebody had crashed outside our house. so we were looking outside, and all we could see were police officers in riot gear. they were storming a house across the road from us. there was lots of running about, lots of shouting. this is the fatima community centre in sheffield, where two of the detained men were arrested in bedsits

adjoining the centre. these were co—ordinated counter—terrorism raids, which may have stopped a plot timed to coincide with the christmas holidays. tonight the four men who were arrested are being held in a police station in yorkshire. they are aged between 22 and 41. as for the bomb disposal unit that has been here for much of the day, they are now gone. there is a police van. the bomb disposal unit is at the community centre in sheffield. a cordon is in place. people have been told they can't go into it. people inside have been told they may be moved out of the area as the evening continues. it just shows this the area as the evening continues. itjust shows this is an ongoing enquiry, with search is still being carried out. danny savage, thank you. mps have heavily criticised social media companies for not doing enough to tackle hate crime. senior bosses from facebook,

twitter and google appeared before mps today. they were accused of providing a platform for extremism and allowing people to use social media to further the ills of society. here's our media editor, amol rajan. harmful content online takes cou ntless harmful content online takes countless forms, but not all of them are illegal. there is the hate speech that attacks individuals on the basis of attributes such as disability or gender. that is quite separate from extremist content, which propagates the worldview of those ranging from neo—nazis to so—called islamic state. how easy is it to find this material online? very easy indeed. one campaigner working with mps on the issue believes social media platforms you're vulnerable adults into the extremist web. how big an issue is soft extremism? it is a significant issue because actually the material

clearly is not removed, it is not illegal in the eyes of social media providers. the other factor is their algorithms are diverging individuals who may have an aggressive worldview, and the algorithms direct them tojoin other worldview, and the algorithms direct them to join other groups who may have similar content. today mps called tech companies as part of an enquiry into hate crime. the committee chair set twitter still had not removed a —— an offensive to eat it was warned about in march. that tweed is still on your platform. why is it? i don't know the answer to that question.|j really the answer to that question.” really do all think we should kill a tory. think of the benefits were we to killjust one tory. that is on twitter. your home say she will not tolerate violent threats of individuals or groups. how does that comply with your code? we have 500

million tweets a day, 330 million users. twitter is used in multiple languages. you are actively recommended what is effectively raises material into people's timelines. aye well asghar reviewers to look into it and get back with a solid response. —— iwillask to look into it and get back with a solid response. —— iwill ask our viewers. i will look at how we can look at hate speech. isn't the truth that your algorithms and the way you wa nt to that your algorithms and the way you want to attract people to look at other linked things, is that actually your algorithms are doing that grooming and that radicalisation? but that is not how facebook sees it. while i do recognise we have a problem, which isa recognise we have a problem, which is a shared problem, with the police, with yourselves, with civil society organisations, how do we address that personally? we may be going down a channel which can lead to them being radicalised. mps have a personal stake in the fight

against harmful content online. but it's not clear that turning tech giants into centres is the best way to safeguard democracy. amol is here. mps did sound exasperated today. what more can be done? most people agree what abusive content is. everyone agrees there is too much of it. no one agrees on what to do about it. there are two reasons. the first is principal. these companies do not want to be in the business of censoring the internet. they are not publishers like the bbc 0re newspaper. they are platforms that gave everybody a voice and they rely on the community to police it. the bigger issue is the question of scale. there is just bigger issue is the question of scale. there isjust so much of this material uploaded online every single minute, that ultimately you will never control of completely. that is not to be defeatist. it is a pragmatic point of view. facebook and google say they are going to double the number of people looking at this. they say the best skill is not what human beings but smarter

computers. thank you. two men who died at a luxury hotel on loch lomond yesterday, have been named. simon midgley and richard dyson — both thought to be from london — when the fire broke out in the early hours of the morning. firefighters managed to save a couple on their honeymoon and their baby, who were on an upper floor of the hotel. 0ur scotland correspondent, lorna gordon, is there for us this evening. 0n the secluded shores of loch lomond, the burned—out remains of one of scotland's most prestigious hotels. it was here that early yesterday morning, while many of the 200 guests were still sleeping, the fire took hold. it gutted the main building and led to the loss of two lives. the bbc understands that simon midgley and richard dyson had been staying at cameron house on a winter break. police have not confirmed their identities but tribute at bin paid social media. more than 60 firefighters were involved in fighting the blaze. the damage she is extensive. the top two

floors of the main building looked to be completely burnt out. the priority forfire to be completely burnt out. the priority for fire crews now is to make this building safe. and their initial investigation is likely to focus on trying to find out where the blaze began. we will be taking witness statements from the guests and staff that were on the property. they will be looking to see if there area they will be looking to see if there a re a cctv they will be looking to see if there are a cctv cameras which may assist them in narrowing the focus of where them in narrowing the focus of where the fire first started. footage taken at the time showed fire crews rescuing a recently married couple from their second—floor room. their baby carried out by a firefighter. ina baby carried out by a firefighter. in a statement, the hotel described this as a heart stopping moment. it called the firefighters involved heroes. the swift actions of the emergency services may have prevented further loss of life in this fatal fire. lorna prevented further loss of life in this fatalfire. lorna gordon, bbc news, loch lomond. it's one of the worst scandals in the history of the nhs. almost 2,500 people

died after being given contaminated bloods in the 19705 and 80s — blood that had been infected with hiv and hepatitis c. this week the government will announce who will run a public inquiry into the scandal. it's welcome news at last, say campaigners, as it emerges that government officials have been using a discredited report into the blood controversy for more than a decade — despite assurances it had been taken out of circulation. here's our health editor, hugh pym he developed hiv and hepatitis and died. carol has campaigned for decades for april —— full public enquiry into the scandal which claimed 2500 lives and ruined thousands more. at last, thatis and ruined thousands more. at last, that is about to happen. she has

uncovered hundreds of documents which she says revealed an official cover—up. which she says revealed an official cover-up. i think there are huge implications for government. they don't want the conversation because there are high numbers of people both infected and affected because you've got the infected haemophiliacs and you've got the affected family members. blood products were haemophiliacs and transfusions were imported from the us. some were infected by donors, including prisoners. in 2006, the government published what was billed asa government published what was billed as a definitive report. but some original documents have been destroyed, so key information was missing. the bbc can reveal it was still in use this year. in august, the top civil servant at the department of health wrote that the report had not been used by officials in recent years and will not be used in the future. but the bbc has seen a letter written earlier this year by a health minister which did make reference to

the report as an authoritative account. when sir chris was told, he apologised and said it wouldn't happen again. the former lib dem minister, baroness featherstone, received the letters from the civil servant, said it was shocking that even this year misleading information was being put out. he apologised because he himself had been part of what beginning that he has suffered since day one. obfuscation, misuse of facts, lies, rebuttals, refusing to acknowledge, almost incapable of listening. the department of health said the independent enquiry would ensure victims and their families got a nswe rs. victims and their families got answers. for carol, the long battle with the authorities has come at great personal cost. at the end of the day it's taken my family life away. that's the reality. you know, i started this as a young woman. i'm now going towards retirement and

there is still no justice. carol wa nts to there is still no justice. carol wants to pass on all her documents to the official enquiry. she can only hope it gets to the truth of what has been described as the biggest disaster in the history of the nhs. hugh pym, bbc news. our top story this evening. a suspected terror plot thought to be planned for christmas is foiled as police arrest four men in derbyshire and south yorkshire. still to come: the 500 year old turkey bones, thought to be the oldest ever discovered in the uk. coming up on sportsday on bbc news: many have tried, many have failed, can leicester stop manchester city, in the league cup quarter—final‘s tonight. imagine starting a whole new career when you're in your 80s and feeling young,

fit and healthy, both in body and mind. or taking on some physical challenge in your 90s, walking for miles with no aches or pains. well, scientists in america are predicting that it won't be long before more and more of us can do just that. they're working on drugs that could help delay the way our bodies age, meaning that we'll be able to do much more for much longer. in the second of his reports on ‘superagers' our medical correspondent, fergus walsh, has been to san francisco and new york. new york public library, one of the city's grandest buildings, which has one of the city's oldest employees. hilda jaffe is still going strong at 95, so what's her secret to a long life? pick your parents, it really is. it's got to be genetic because both my parents lived long. good morning, fergus, i'm glad you could meet me here in this absolutely beautiful room.

hilda gives tours of this historic building when she's not at the theatre, music concerts, opera or her two book clubs. i don't exercise, i walk, i walk a lot. if i had to give anybody advice i would say, just keep moving. samples of hilda's dna are stored in this freezer in the bronx, part of a study into longevity. they found only one in 10,000 people has protective superager genes, but say drugs might be able to help the rest of us. metformin is an old, cheap diabetes drug, but a major trial is planned to see if it can delay ageing. i can get you 690 of those for $60. scientists here believe it may slow the biological processes that trigger key diseases. we have data in humans that metformin would delay cardiovascular disease and will delay diabetes and is associated with less cancer

and seems to delay alzheimer or cognitive decline in people. ageing is an inevitable process which begins as we reach adulthood and continues through the decades as our muscles, bones and organs gradually wear out. this tai chi group in san francisco show that we can delay that decline, it helps with balance, core strength and provides a social network. it makes me feel so young, i have so much fun. i feel like i'm in the kindergarten of the universe. my mother lived to 103. i don't desire to live that long, but i want to be as healthy as i can, as long as i can. that's an ambition we can all share. imagine a future where it didn't hurt to get old, where ourjoints didn't wear out? it would have a huge impact on our quality of life as we age.

this biotech company in california has developed a drug to counter one of the key diseases of ageing, osteoarthritis. human trials of this experimental compound should begin next year. this is an area of the cartilage that is now diseased. you can see the cartilage is damaged. it works by clearing cells which build up in the kneejoint, which maybe a trigger for the painful condition. a single injection that we believe and hope will alleviate their pain and begin the restorative process in their knee to perhaps at least halt, regress and even completely repair the knee in the end is what our wildest hopes would imagine. that would mean more people could age like hilda, free of aches and pains and independent well into their 905. fergus walsh, bbc news, new york.

the future of the retailer toys r us and the jobs of more than 3,000 people who work for it in the uk are hanging in the balance tonight amid fears that the company is about to collapse. toys r us has been told it has to put £9 million into its struggling pension fund by the end of this week, money it may not have. our business correspondent, simon gompertz, is at a toys r us store in south london. can it survive? well,ing this outlet in fact is one that wasn't going to survive. what toys r us plan to do was to make a rescue deal, with its creditors, that they would vote on under which it would be a slimmed down operation operation. losing a quarter of its outlets it would pay back less to its creditors and struggle on. what happened today is that the pension protection fund, which is the lifeboat organisation which is the lifeboat organisation which stands behind the pension

schemes of troubled companies like this one, has voted against that rescue deal, putting all the outlets in jeopardy. the reason rescue deal, putting all the outlets injeopardy. the reason is, they say, they want toys r us to come up with three years worth of pension contributions upfront in order to win its vote. toys r us says it doesn't have the money. so it's not all over yet. the company says it can carry on trading as things are through christmas and into th new year. the vote isn't finalised until thursday. expect intense negotiation until thursday to try to bring the pension protection fund round. simon, thank you. in northern ireland, a recent survey of gay and lesbian pupils found that two thirds of them did not feel valued in their schools. however, gay rights groups claim that official report was initially shelved because the then dup education minister wouldn't give clearance for it to be published.

our ireland correspondent, chris buckler, reports. every pupil has bad days in class, but some feel like they simply don't belong. alex goes to a single sex school, but identifies as non—binary. that means alex sees themselves as neither male norfemale. it's a pretty huge problem because you've basically got a target on your back if you're different to everybody else in the school. it's name—calling in the corridors, it's chanting on the bus. it's just constant negativity every single day in school. what kind of an effect does that have on you? it has impacted my mental health, obviously. itjust makes you not want to go to school. itjust makes you like tired, constantly tired and constantly tired. at hazelwood integrated college they're making a point of trying to offer more support. they've set up a group called gay, straight, whatever and the school's made changes to recognise the needs of lgbt pupils. we changed our uniform policy from female to male

to adjust our uniform. the group includes both pupils and staff members who are openly gay and lesbian. i actually went to this school and i work here now on the support staff. when i went here, i had no confidence because i had no one to talk to. so now coming back and seeing things like — "some people are gay, get over it" and posters on the walls, it's great. yeah, it's definitely a tough place to come out because there are so many politicians in the government, and all of that itself, that is putting a lock on equal marriage. at this year's belfast pride event, many campaigned for the introduction of same—sex marriage in northern ireland, which was blocked by the democratic unionist party. some of the dup's other statements and actions have angered members of the lgbt community. a report by northern ireland's department of education found that two thirds of gay, lesbian, bisexual and trans pupils did not feel welcome or valued in their schools. however, this report wasn't released for many months, apparently because the then dup education minister, peter weir, wouldn't give clearance

for it to be published. the dup refused a series of interview requests. however, this report wasn't released for many months, apparently because the then dup education minister, peter weir, wouldn't give clearance for it to be published. the dup refused a series of interview requests. reporter: ijust wanted to ask you... but when we caught up with the party's former minister at a constituency event, he denied shelving the report. you will find different communities will find themselves under levels of pressure at school, and i think that's something which need to combated across the board. do you think unionists could be doing more to make sure that lgbt pupils feel welcome? i'm not quite sure why

you're particularly saying unionists in that regard. we have spoken to some and they're upset because of same—sex marriage, they're upset because of comments that have been made by unionist politicians, dup politicians in the past. well, i think that people should always try and be sensitive in their comments. obviously from my own party point of view, in terms of same—sex marriage, we've a particular definition that we believe in the traditional definition of marriage. across the uk, schools are studying how they can change with society and tthat means learning with their pupils. chris buckler, bbc news, belfast. a man has been sentenced to 25 years in prison for throwing acid into the crowd at a packed east london nightclub. 16 people were seriously injured. in cctv footage from the mangle club in hackney, taken in april last year, arthur collins, the former boyfriend of a reality tv star, can be seen squirting the liquid into a group on the dance—floor. prosecutors say it related to a gang feud collins was involved in. christmas, it's that time of year again when rather a lot of turkeys will be served up for the traditional christmas roast. but archaeologists in devon believe they have unearthed a rather special turkey, it may well be the oldest turkey ever discovered in the uk, dating back almost 500 years. jon kay has the story. a traditional turkey dinner with all the trimmings, but it seems they've been gobbling it up here in devon for much longer than anybody realised.

at exeter university, a surprise discovery. at first i wasn't sure because it looks like a giant chicken. in a pile of ancient animal remains, found here in the ‘80s, two mysterious thigh bones and a wing. archeologists have now established they're from an american species of turkey nearly 500 years ago, believed to be the oldest ever found in britain. i started knocking on doors and showing offjust how excited i was by actually telling other people, "look what i found." but, yes, so it is very nice and it's really great for a zoo archeologist to actually have this connection with history. we've got a plate and a bowl. the bones could be dated because they were found with a pile of washing up — crockery from a grand feast in the early 1500s, which is when the first turkeys arrived here. these were an exotic bird, brand new into the country. you know, people wouldn't have heard of it. what did it taste like? you know, what is this giant bird? the first turkeys are said to have been imported by the explorer william strickland in the 1520s after he bought six from some native americans. well, strickland is said to have sold his birds for tuppence each. five centuries later, turkeys are rather bigger business, 10 million of them due to be sold in britain just over christmas. off we go then, turkeys.

this devon farmer wonders if the bones found down the road might be from those original birds. potentially these, in some way, are direct descendants of the ones that arrived, and here they are back in devon. so this's quite nice. in what else but a sandwich box, the turkey bones have now been taken to the city museum to go on the display after christmas dinner. jon kay, bbc news, exeter. time for a look at the weather, here's tomasz. it was bone chilling cold in bournemouth this morning, compared to other parts of the country. we will look at that in a second. look at this stunning picture from uckfield, east sussex. beautiful. a nice foggy one from staffordshire. we didn't quite have as much fog as we thought. it was more frosty than anything. my yus four on the coast

there. 15 degrees at the same time in scotland. that is how incredible and weird our climate is sometimes. or weather! this evening, lots of cloud across the country. there will be no freezing fog or frost or anything tonight. temperatures will be too high for that, six, seven degrees. early on wednesday morning in the north of the country it will be into double figures. overall a mild night in the way. we are forecasting this mild weather to stay with us through most of this week and into the run—up to christmas. look at that, the mild air has reached areas as far north as scandinavia, finland and even the far west of russia. through the course of tomorrow it's cloudy and quite drizzly across western parts of england and wales. there is a weather front moving across the uk. this is where we sometimes find a little bit of rain to the north of the weather front it will be cooler. not desperately cold, nine in aberdeen. there will be more sunshine around. a mild morning and

a mild day overall across the uk tomorrow. here is thursday, stays mild, cloudy unfortunately, not very festive. no frost around either. the north of the country a little bit fresher there. around five degrees in the north. high pressure with this mild weather stays for the next few days. thank you. that's all from the bbc news at six, so it's goodbye from me and on bbc one we nowjoin the bbc‘s news teams where you are. hello. this is bbc news. the headlines. police believe they may have foiled an alleged islamist terror plot planned for the christmas period. four men have been arrested in south yorkshire and derbyshire — and bomb disposal experts have been called in to properties in sheffield and chesterfield. the government says it wants a ‘more diverse' judiciary — despite rejecting targets for appointing more black and minority ethnicjudges.

government officials who are investigating the scandal into contaminated blood products have been using a discredited report — despite assurances that it would be taken out of circulation a man has been sentenced to 25 years imprisonment for throwing acid in a crowded club in east london. arthur collins was convicted last month of five counts of grievous bodily harm and nine assault. the hms queen elizabeth, the navy‘s new £3 billion aircraft carrier is already facing repairs for a leak. in a moment it will be time for sportsday but first a look at what else is coming up this evening on bbc news. katty kay and christian fraser will have more on donald trump's