it has been almost a year since our worst fire in living memory. we need justice, please, for everybody who died, for all the children and the mothers. the people of grenfell were failed but nobody has been held to account. don't try and make me look like i'm the one who is angry for the wrong reason. i'm angry for the right reason. one year on, a community is still waiting for answers. your design helped that fire spread, didn't it? are you responsible for the deaths of those 72 people? we asked those involved how it could happen. do you bear any responsibility for that building being as unsafe as it was? no, we don't. we try to find out who is to blame. that building, a perfectly safe building, was covered in plastic and insulation that burned like a bonfire. and we uncover a scandal, grenville was wrapped in a flammable

product that should never have been there. all i can say is that it is utterly wicked that this state of affairs has been allowed to arise. moved back! way back! he's made a rope from his blanket and sent it down. it was the biggest single loss of life in the uk for almost 30 years. 72 people were killed by the grenfell fire. look at this madness that is going on, oh, my god. you can hear a man screaming. that is tony, that is tony! panorama was there, a year ago.

we know that these people are dead. we have got a 12—year—old missing. so you couldn't make it? i don't know. we were with maria when she found out the worst possible news. you 0k, maria? and we were with luca when he was reunited with the woman he saved. as far as i remember, i know it was a big man who picked me up, without thinking, you just open the door, picked me up. after the fire, we stayed with a community overwhelmed by grief.

this is my next door neighbour. we went for the funeral last friday. this guy here? yeah, the old guy with his grandson. he was your neighbour? my next—door neighbour. he was my next—door neighbour. it's very sad. all of those people, we're not going to see any more. i feel a guilt at the night, i didn't knock on the doors. but you collapsed outside. the smoke was so thick, you couldn't breathe. i know, but then again from you know. if you you had knocked on that door, you would have died. it took months for some relatives to get confirmation their loved ones were dead. maria's brother was

on the 20th floor. he never got out. until now, there is nojustice comes to the people who died. you cannot leave people like this. this can may be happen easily in our country but in the uk? no way. in the uk, somebody can be left to die, burned to death? this is impossible. so how could this happen and why,

one year on, has no one been held to account? we will question the people involved. one fact is now clear. the disaster would not have happened but for a refurbishment that started in 2014. it covered grenfell in flammable material. the architect was andrzej kuszell. his design created gaps that spread the fire and allowed it to get directly into people's flats. now, the building regulations had

become weak and unclear, but it was his job to make the plan is safe. he failed. his new exterior turned grenfell into a death trap. mr kuszell didn't respond to our letters so i am going to try to grab a word. was your design to blame for the grenfell disaster, sir? i'm sorry. could you just answer my questions? because your design helped the fire spread, didn't it? and the cladding, you must have known that the cladding was dangerous. please give us an answer, the people of grenfell want to know. are you responsible for the deaths of those 72 people? mr kuszell later told us it would be inappropriate to comment because his firm is cooperating with the police investigation and the public inquiry into grenfell. he said his thoughts remain with those affected by the fire.

i am so glad you guys are ok. mahad and his family lived in the flat next door to where the fire started. a year ago, they were made homeless. i'm so pleased for you. when you see the ashes now and it falls on the ground, it goes like that you? what kind of material was this made from? who approved it? this is where the questions lie. when i see mahad month later, he seems different. i've been documenting things, finding out how many survivors they are, getting to the real gritty details of how many visitors there actually was in every person's out. but the council, central government, all of you come everyone else, would want to portray it is just

the tenant and the occupants, but wait... hang on. what about our relatives? he is upset because the police cordon around grenfell has been left unattended. i'm angry, of course i'm angry, it's an open coffin in our community are neglected by local government and the local authority once again. how can i not be angry? we've got relatives dead still in here. how do you expect me to feel? what's your name again? richard? yeah. richard, how do you feel about this? because you're being political. no, i'm not being political, i'm being really brutal with the right now. what i think is, i think what has happened there is a disgrace and i've spoken to you about this at length but what i'm worried about you is. it is a disgrace, simple, leave it as that, mate. we've lost families, friends, neighbours. don't expect us to recover as if it was a bike crash or something. why are you angry with me? don't try and make me look like i'm the one who is angry for the wrong reason.

i'm angry for the right reason. what is going on with mahad? he is really upset and i don't blame him because he's been denied any access to get near his house or anything for weeks on end. and yet, look on it just seems that if you turn up at the right and you can go down and take pictures and gawk. he just seems really traumatised though. he is, he's absolutely traumatised, at the end of his tether. what support has been offered to him? none. the firms that carried out the work on grenfell tower have some of the biggest questions to answer. the main contractor was rydon. they got the contract by undercutting rivals and then

used cheaper materials. they failed to properly fill the gaps at the side of the windows, which allow the fire to spread inside. and it was rydon who suggested swapping noncombustible cladding for a cheaper version that burned. they were wrapped up in highly flammable material that also is highly toxic when burnt. i can see it gets to you now, doesn't it? yes, because it should never have happened. it's, it was totally avoidable, entirely avoidable, and... all i can say, it is utterly wicked that this state of affairs has been allowed to arise. it was a new combination

of cladding and insulation, so rydon had a legal responsibility to test it for safety. we don't think they did. i've got him directly in front of me now. rydon‘s chief executive says he also cannot respond because of the public inquiry. this is a dead—end. but we think that is an excuse. we've been trying to talk to him for months. mr bond, hello, sir, my name is richard bilton. i work for panorama. i'm a reporter. we've written to you and sent you e—mails. i'd like to grab a word if i may. i want to know why your company rydon chose to use that cladding. it's easter saturday. i'm allowed to talk to him and asking questions. i've written to you, could you explain to me why you used that cladding?

you must have known it was cheap and dangerous. no, it wasn't, but now is not the time, i'm with my family. but we've written to you lots of times, sent e—mails, i'm just trying to get your side of this. wasn't it yourjob to make that building safe? we did, we put the cladding up that was specified by kensington and chelsea council, approved by building control and the local authority, approved by the architect. but that combination, it is not hard to find out it is dangerous. did you do any testing, be clear with me, this is your right of reply, did you do any testing? we didn't do any testing because we are not required, it was deemed to comply. if you could go back and do it again, would you test again? the people of grenfell want to hear it. we would work to the regulatory framework. you think you were within the regulatory framework? absolutely, 100%. do you bear any responsibility for the building being as unsafe as it was? no, i won't.

one last question, what can you say to the families of those who died? it is a terrible tragedy and my heart goes out to them. despite what mr bond says, the cladding system should have been tested. we think it is illegal that it wasn't. welcome to paradise! this is the place i recently got. on the right—hand side is the kitchen. i am expecting my builders to come here and help me. so, this is the first stuff in my fridge, for good luck. luca hasjust picked up the keys to his new flat. it is a chance for a fresh start. we are in the middle

of the flooring at the moment. so, i am trying to make this space feel like home. that is why i am doing some work and some adjustments. it will be a house—warming party. lots of my friends, lots of my new friends from the community side. my family from grenfell tower. we are not friends any more, we are family now. so, it will be something to remember, hopefully. there is no plan to start a new life. itjust happens. unplanned, unpredicted. but this is going to be a lucky one, this time. maria has just returned from a memorial service for her brother in egypt. her mum was not able to make the trip. maria has brought back

messages from their family. please, please. it is so painful and so deep. i tried to run away but it doesn't work. i've still got the pain. but i thought if i was with her in this state, i would make it worse. and i don't want to see her like this. we just need justice, please. not only for hesham, but for everybody that died, all of the children, all of the mothers, all the families. it's not fair for anybody to go through what we are going through. the more you look at what was on grenfell tower, the more horrifying it becomes. we have tested the two main products, the cladding and the insulation behind it. when the cladding gets hot, the plastic centre melts and burns. it immediately sets fire to the flammable insulation. the fire spread of grenfell in 15 minutes, from the second

floor to the 22nd floor. that is very, very fast fire spread, because you had so much combustible material. that would be the equivalent of having four large petrol tankers full of petrol, all burning at the same time on grenfell tower. before the disaster, these two products had never been tested together. we have discovered the makers of both products knew that they were being combined at grenfell. but they didn't warn the project about the risks. knowing there is a combination going on the building and doing nothing about it, i cannot see how that is justified, apart from looking at the bottom line of profit. our investigation has uncovered a scandal involving the insulation. this is the type of insulation that was on grenfell. this is not sped up, it burns this quickly.

that smoke is poisonous. it contains cyanide. we understand that nearly all of those who died at grenfell were killed by smoke. one of the insulation materials used on the tower produces large quantities of hydrogen cyanide when it burns. which is very little. it is 20 times more toxic than carbon monoxide. how long would you survive, being exposed ? well, once you have collapsed, unless you are lucky enough to have someone rescue you, effectively you are going to continue breathing until you have breathed in a lethal dose. the insulation had passed a safety test for use in specific conditions. but the manufacturer knowingly misled buyers. celotex said the insulation was suitable for refurbishing

buildings over 18 metres in height. it wasn't. they also suggested it was suitable for use with a range of cladding panels. it wasn't. they were warned their marketing was misleading, but they didn't stop. that is remarkable and staggering. i think people will be extremely angry about that. it's just... it is unbelievable. celotex say they want to express their deepest sympathies to everyone affected by the fire. they say they can't comment because they are cooperating with the police investigation and the public inquiry. but they didn't deny any of our allegations. and it gets worse. we have discovered the actual insulation on grenfell had never been tested for tower blocks. celotex used a different formula when they got a safety certificate. panorama understands that product contained extra fire retardant. we think a more flammable version was then sold for public use. well, words fail me. this is absolutely mind blowing. this material is all over the place.

god, bleep. jesus! how is that possible? it hasjumped all the way along the flats, look. so it is now clear the insulation which burned out of control on grenfell should never even have been there. celotex knew that it wasn't suitable. but they targeted the grenfell refurbishment and specifically offered their flammable insulation. we have been advised that the company's behaviour could amount to corporate manslaughter. that sounds like a very, very serious thing that has happened, if that has happened. and clearly that needs to be investigated. and if there are breaches of the law, then those people need to be held to account for it.

when we next visit luca, he is back in a hotel. incredibly, he's been through another fire. remember that new flat? there was a fire next door. he has lost his home again. it was four o'clock in the morning when i woke up in a room full of smoke. i wasn't sure if it was a dream, or reality. then i realised there was a blue light outside. i just really... i don't know. it's very confusing, pretty much. to get through all that stuff again. luckily, i'm out. i can't talk about it. i'm pretty much lost. maybe i'm not in the right mood or position to talk about anything. i don't know. it seems like i'm not as open as i was before. and i?

am i different? i'm trying to find myself as a... am i? am i getting a little bit more closed than i used to be? the people of grenfell have remained close. every month, hundreds gather to walk silently through kensington. luca is here, and clarita, the woman he rescued, is with him. as they near grenfell, the fire service provides a guard of honour. much of the community's anger is centred on the company that managed grenfell tower. kensington and chelsea tenant management organisation was run by robert black. his organisation oversaw the cost—cutting measures.

they ignored repeated safety warnings from the fire service about tower blocks, and from grenfell residents who predicted a disaster. they didn't protect the people of grenfell. mr black told us that they were simply managing grenfell on behalf of the council, and they relied on advice from experts. he expressed his deepest sympathies, but he did not answer our questions. mr black, it is richard bilton from bbc panorama. can i ask you a quick question, sir? grenfell tower, that was yourjob to

keep those people safe, wasn't it? your actual duty. did you fail in that duty? it is no good pushing me, did you do that? i'm asking you a question. is the reason that those people died because that refurbishment was done on the cheap? i am asking you straightforward questions, i've written to you. it was done on the cheap, wasn't it? the planning application was signed in your name, it had cheap, dangerous cladding and insulation. did that, say? why don't you answer the question? the reason that people get angry, i think, it's no good pushing me, i'm trying to ask you sensible. questions 72 people died because that building, a perfectly safe building, was covered in plastic and insulation that burned like a bonfire.

do you take any responsibility? the people of grenfell wanted to hear your side. i wanted to hear your side. there is a public inquiry. there is, but we want to hear from you. i will be at the public inquiry. as you know, you are the focus of a lot of attention because the planning application for the refurbishment was signed by you. the fire brigade warned your organisation. the residents warned your organisation. 72 people died. you think you could that if you listened to the warnings? i think there is a public inquiry. get me one last sentence. we're working with the public inquiry. that's it? you got nothing to say to the people of grenfell. as the anniversary of the disaster approaches, mahad and his family are still living in temporary accommodation. luca is still in a hotel. and maria is still waiting for answers. we have to look for

justice, and immediately. not years, because nobody will wait years. i will not wait years. today, the public inquiry finally heard evidence for the first time. but the government still hasn't banned flammable cladding and insulation. no change. no arrests. no peace for grenfell‘s victims. welcome to bbc news, broadcasting to viewers in north america and around the globe. my name is lewis vaughanjones. our top stories: a substantial chance of delay. president trump casts doubt over the north korean summit. a new lava flow from the kilauea volcano threatens a power plant on the

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