Seven people are still in a Critical Condition. The attacker was shot dead. A terrorist came to the place where people of all nationalities and cultures gather to celebrate what it means to be free. And he took out his rage indiscriminately against innocent men, women and children. We will have all the latest from westminster on the ongoing investigation. And coming up on bbc news, the latest and the stories of those killed and injured in a Terror Attack in westminster. Good afternoon and welcome to the bbc news at 1pm. The Prime Minister says the man who carried out the attack on Westminster Yesterday was british born and known to the Security Services. A Police Officer and two pedestrians were killed when he launched his attack, driving at high speed across Westminster Bridge, before trying to enter the Palace Of Westminster where he was shot dead. Around a0 others, from 12 different countries, have been injured seven of them are still critical. So called Islamic State group has claimed responsibility for the attack. This morning a minutes silence was held in westminster in honour of the victims. Eight people have been arrested in overnight raids, but police say they believe the attacker was acting alone. Ourfirst report this afternoon is from our correspondent wyre davies. The House Of Commons was in sombre, reflective mood this morning. Order. Colleagues, in respectful memory of those who lost their lives in yesterdays attack, and of all of the casualties of that attack, we shall now observe a minutes silence. Mr speaker, yesterday, an act of terrorism tried to silence our democracy. But today, we meet as normal. As generations have done before us, and future generations will continue to do, to deliver a simple message. We are not afraid. And our resolve will never waver in the face of terrorism. As the queen said her thoughts and sympathy were with all of those affected by yesterdays awful violence, at new Scotland Yard the metropolitan police paid their tributes to a fallen colleague, after an attack on the capital that everyone had dreaded and trained for, but is now determined to overcome. With the union flag at half mast above the Palace Of Westminster, the immediate area around parliament remains closed to the public. That includes Westminster Bridge, where shortly before 3pm yesterday afternoon, a lone attacker drove a Four Wheel Drive Vehicle at high speed through an unsuspecting crowd of tourists, Police Officers and londoners going about their business. One victim was catapulted into the thames, as the car mounted the curb. The unnamed woman was pulled from the river injured, but alive. The vehicle continued at speed, past big ben, and crashed into the railings surrounding the Palace Of Westminster. But the attacker got out, and armed with two large knives, ran around to the main gates, where he stabbed a Police Officer, 48 year old keith palmer. As he continued further into the grounds, the assailant was then shot as he tried to attack other officers. Is he coming . The panic clear from this the Panic Clearfrom this mobile phone footage Inside Westminster as staff and mps fled. Amid the chaos of yesterdays attack, many have commented on the extraordinary bravery and compassion of passers by, mps and Emergency Services in giving first aid and tending to the victims. But three people were killed by the attacker, including pc palmer, a father and husband. Also aysha frade, a 43 year old from spain, Teaching Spanish in london. The attacker, who also received first aid but died from his injuries, has not been named. But he was british and was once investigated for links to extremist organisations. Police from several forces launched simultaneous operations overnight, in the midlands and in london, making eight arrests in connection with the westminster attack. The enquiries in birmingham, london and other parts of the country are continuing. It is still our belief, which continues to be borne out by our investigation, that this attacker acted alone and was inspired by international terrorism. Investigators are still painstakingly piecing together the exact circumstances of what happened in and around parliament. But in london and westminster generally, security has been visibly and significantly increased, around what was already one of the most heavily protected areas of the capital. The importance of providing a blanket of security, while maintaining the freedoms britons cherish so deeply, never more challenging. Wyre davies, bbc news. Well, with me is the policing minister brandon lewis. Good afternoon. It must be of great concern to you that someone who was known to the Security Services, albeit some time ago, and to the police, was able to carry out an attack of this scale . We dont comment on an ongoing investigation. The Prime Minister and acting Deputy Commissioner have said what we can say and theres nothing more we can say and theres nothing more we can say at this stage. The policeman who was killed here in westminster, known to yourself, tributes were paid to him today in the commons. Theres a real sentiment today of the great fullness of the British Public for what the police have done, a sentiment that must be echoed around the country. Absolutely. So many colleagues, not just members of parliament but who saw him every day when he came in. Its a wider grief, all of the police force, while sir thoughts are with keiths family and friends and close colleagues, everyone in the Emergency Services, who performed so phenomenally well. We owe them a huge debt of thanks for what they do every day. Yesterday really highlighted that. What will be the impact of all this . Are we going to see more tighter policing on The Streets Of London . Landmarks with more police around them . What people will see in the next few days and weeks is the metropolitan police will assess what is required for london. There will be more armed police to give reassurance. We are confident this issue was a single incident which has been dealt with. What we see now is to have Police Officers out there, what were seeing around westminster is people getting on with their daily lives and showing the very british constitution, getting on with things, and that will prevail. Thank you. Here at westminster the Prime Minister said it was very much Business As Usual, with mps and peers returning to work as normal. Our Political Correspondent iain watson reports. Business as usual, thats the message parliament wanted to send. But around westminster it felt like anything but. Security was tightened. And the victims remembered. After the silence, determination. It statement, the Prime Minister. Theresa mays tone was measured but resolute. We meet here in the oldest of all parliaments, because we know that democracy and the values it entails will always prevail. Those values, free speech, liberty, human rights and the rule of law are embodied here in this place. But they are shared by three people around the world. This Westminster Street is normally bustling with mp5, staff and tourists. Today its a crime scene, you and tourists. Today its a crime scene, you even need and tourists. Today its a crime scene, you even need Security Clea Ra nce scene, you even need Security Clearance just to be here. Scene, you even need Security Clearancejust to be here. This attack on parliament, this attack on democracy has at least achieved something, at one of the most divisive times in british politics, its brought together people right across the political spectrum in condemnation. It is by demonstrating our values, solidarity, community, humanity and love that we will defeat the poison and division of hatred. Today of all days we are reminded that notwithstanding our differences on political and constitutional issues, we are as one in our dedication to democracy of the rule of law and harmony between peoples of law and harmony between peoples of all faiths and none. We have learned in Northern Ireland that the way to overcome terrorism is by working together, politically and in every other way, to ensure that our democratic values, the rule of law, human rights are all upheld in every way they can. This was an horrific crime and it has cost lives and caused injury, but as an act of terror it has failed. It has failed because we are here and we are going to go about oui here and we are going to go about our business. For many at westminster the loss of Pc Keith Palmer was notjust tragic but raw. The Foreign Office minister struggled to try to keep him alive, and for one mp he wasntjust a Police Officer, he was a personal friend from the territorial army. He was a strong, professional public servant. And it was a delight to meet him here again only a few months after being elected. Would my right honourable friend the Prime Minister, in recognition of the work that he did and the other Police Officers and Public Servants here in the house do, consider recognising his gallantry and sacrifice formally with a posthumous recognition . But on this day the tributes and reflection at westminster, difficult questions are still being asked. The assailant was tackled and shot but briefly he managed to get through these gates and into the precinct of parliament. Is it time to consider whether the police hougaard sensitive sites known to be of interest to terrorists, Like Parliament or like airports, should routinely carry personal protection weapons . The police her rohit pleaded their job. But, as is routine, the Police Together with house authorities are securing reviewing the security of the parliamentary state, together with the cabinet office, who have responsibility for the security measures. The heart of democracy continues to beat but parliament remembered those who lost their lives, in what the Prime Minister described as an attack on Liberty Foster iain watson, bbc news, westminster. Have a system Political Editor norman smith is in westminster. After the attack yesterday and the shock of that attack, can it really be Business As Usual . I think that might be difficult. How could it be given yesterday . Peoples minds are still on those events. We began the day with a minutes silence, some mps were close to tears but i think today was about symbolism, and symbolism matters. There was the symbolism of a packed Commons Chamber with many mps cancelling trips away, cancelling other business, making a determined effort to make sure they we re determined effort to make sure they were in the chamber as a sort of visible symbol to the world that parliament continues, it is not cowed or curtailed by yesterdays attack. Similarly there was the symbolism of the day you hear beginning as it always begins with the speakers procession behind me here through central lobby. The speaker leading his chaplain and this serjeant at arms, a visible symbol of the longevity of this parliament. It has survived through the centuries, it has survived numerous threats and attacks and will continue to do so. There was a more sort of prosaic symbolism of members of the public able to go through those doors up to the public gallery, to watch their elected representatives, a visible symbol that this building remains a public building that people still have access to. Although it is often portrayed as a sort of theatre of discord and confrontation, i think there was a genuine sense of unity today, about what binds this place together and it is a shared conviction in democracy. Norman smith in parliament, thank you. Westminster bridge was packed, as it always is, yesterday afternoon with tourists taking photos, School Children on tours, people on their way to and from work walking through the very heart of london. Three people were killed by the attacker a Police Officer and two pedestrians on the bridge. Around a0 people others were injured from 12 different countries, as daniel boetcher reports. Pc keith palmer, a husband, a father, a Police Officerfor 15 yea rs. Father, a Police Officerfor 15 years. He died protecting parliament. The Prime Minister said he was every inch a hero. He was remembered today by colleagues in a Police Service that has been left numb by the loss of one of their own. Today, across the service we have Police Officers in mourning for theirfallen colleague, pc Police Officers in mourning for their fallen colleague, Pc Keith Palmer. Words cant express the grief that everyone in the Police Service feels that losing a colleague, but of course that pales into insignificance. One one thinks of pc palmers colleagues, family and friends at this extremely troubling time. Also killed in this attack was aysha frade, who was in her 40s and worked ata frade, who was in her 40s and worked at a College Close to Westminster Bridge. It is reported she was on her way to pick up her children. The principle of the college that she was highly regarded and loved by stu d e nts was highly regarded and loved by students and colleagues. A former neighbour spoke of her devastation. She was just neighbour spoke of her devastation. She wasjust a neighbour spoke of her devastation. She was just a lovely person with two lovely children. This two lovely, lovely girls. How obese children. Theyve lost their mother. You leave your kids, you took them to school and go to pick them up and now this has happened to you. Im just them up and now this has happened to you. Imjust in them up and now this has happened to you. Im just in shock, too much shock. Those caught up in this attack came from many different countries, romanian Officials Say a woman who fell into the river thames when the car ploughed into pedestrians is a tourist who was in london to celebrate her boyfriends birthday. Its reported that she was seriously injured. And there was a gioup seriously injured. And there was a group of students from the school in brittany, they were in london on an educational trip, three were injured, two of them are reported to have suffered serious fractures. The French Foreign minister travelled to london to visit them. Its a new tragedy. I want to return to paris, but i wanted to stop in london first, to send a message to the british people. A message of solidarity. Of those injured in the attack, 29 were treated in hospital and some of those remaining Critical Condition. Daniel boettcher, bbc news. Lets go to france. Lucy williamson is at the school in brittany, where that group of stu d e nts brittany, where that group of students who were visiting london, who were here on Westminster Bridge, are from. It was a big party of stu d e nts are from. It was a big party of students who were here, wasnt it . Yes, it was, weve been speaking to their classmates and friends this morning who turned up for school here and base broke about how upset and shocked they were to learn the news last night that their comrades had been caught up in this attack in london. One woman was telling us how people were in tears. Another said that when the headteacher gave their address to the students here this morning, it was interrupted, when one of the pupils fainted. Weve also been down to a gathering near the town hall here today, where stu d e nts the town hall here today, where students from other schools in the area came to show their solidarity and as you say, there were many people in london when this attack happened. Over 90 pupils from this school behind me. Some of whom at least we believe are expected back in france today, so parents here, grandparents, are now waiting to be reunited with those children. Lucy williamson, thank you. Seven people remain in a Critical Condition. Most of them are being treated at Kings College hospital in central london. Helena lee is there for us. What more can you tell us . This is one of five hospitals across london where the injured have been treated this lunchtime. It was just befo