Woolwich attack: 'Terror attack will not divide us but makes us stronger': Cameron urges Britain to continue with normal life Prime Minister condemns sickening attack on a soldier in London Reveals that two suspects were known to security services Paid tribute to Scout leader who confronted knife-wielding attacker Green party leader Natalie Bennett blames killing on Iraq and Afghanistan U-turn on banning troops from wearing uniforms in public London Mayor Boris Johnson hints that attack is being treated as a one-off David Cameron urged people to 'go about our normal lives' in response to the brutal killing of drummer Lee Rigby on the streets of London. Scroll down for video and full statement Security: The Prime Minister revealed the two suspected killers were known to the security services, and an investigation will be launched into the actions of the police and other authorities Message: David Cameron used his personal Twitter account to vow: 'We will never buckle to terror' Mr Cameron said images from the horrific killing of the 25-year-old on a busy street in Woolwich were 'deeply shocking'. Police were this afternoon guarding the 25-year-old serviceman's home in Middleton, Greater Manchester. He was described as a 'loving father' to his son Jack, two. Drummer Lee Rigby was just starting his Army career and had recently fought in Afghanistan with the Royal Regiment of Fusiliers. But as he walked towards the Royal Artillery Barracks in Woolwich, south-east London yesterday afternoon, he was run down by a car on the pavement and hacked to death. Mr Cameron said he could not comment on the detailed police investigation but vowed: 'This country will be absolutely resolute in its stand against extremism and terror. Troops: The Prime Minister visited an army barracks near the scene of the killing in Woolwich Tour: Mr Cameron visited Woolwich today and met local MP Nick Raynsford for talks with members of the local community Community: Mr Cameron, joined by London Mayor Boris Johnson, stressed that the attack was a betrayal of Islam ¿ and of the Muslim communities Green party leader Natalie Bennett courted controversy when she suggested the killing of a British soldier was connected to the wars in Iraq and Afghanistan. The Australian former Guardian journalist said there would be more similar attacks if Britain continued to act like 'the world's policeman'. David Cameron and Boris Johnson are among the senior politicians to reject the idea that the Woolwich slaughter of drummer Lee Rigby could be justified or connected to British military activity overseas. But Ms Bennett said: 'It's absolutely tragic what happened in Woolwich and you've got to feel not just for the family of the serviceman but also for the people and bystanders that saw it happen and the emergency services that had to deal with it afterwards. 'But if we're going to stop that happening again in the future, one of the biggest things we have to do is stop regarding ourselves as the world's policeman.' In an interview with LondonLovesBusiness, she added: 'Look at Iraq, Afghanistan - we should never have got involved and the results have been dreadful for us. We need to stop regarding ourselves us as having the right to stick our oar in around the world. Government sources confirmed to MailOnline that the names of both suspects were on a list maintained by the security services, but stressed it was unclear what level of surveillance if any they were under. In shocking video footage in the wake of the violence, one attacker with blood on his hands was filmed declaring: 'We swear by almighty Allah we will never stop fighting you.' But Mr Cameron rejected the idea that the killing would ever be justified by the Muslim community. This was not just an attack on Britain - and on our British way of life. It was also a betrayal of Islam - and of the Muslim communities who are give so much to our country. We will defeat violent extremism by standing together, by backing our police and security services and above all by challenging the poisonous narrative of extremism on which this violence feeds. Britain works with our international partners to make the world safe from terrorism. Terrorism that has taken more Muslim lives than any other religion. It is an utter perversion of the truth to pretend anything different. That is why there is absolutely no justification for these acts and the fault for them lies solely and purely with the sickening individuals who carried out this appalling attack. Senior ministers, police and intelligence agencies gathered in Downing Street this morning for a second meeting of the emergency Cobra committee to plot the government's reaction to what is being treated as a terror attack. The Cobra meeting was attended by Met commissioner Bernard Hogan Howe, deputy commissioner Cressida Dick, Defence Secretary Philip Hammond, Communities Secretary Eric Pickles, Faith Minister Baroness Warsi, London Mayor Boris Johnson and the intelligence services. Visit: London Mayor Boris Johnson also visited the scene of the Woolwich killing as he suggested it was being treated as an isolated incident Justice: Mr Johnson told reporters that the killers would be 'brought to justice' as he urged Londoners to go about their lives 'in the normal way' Tributes: A woman asks a policeman to lay flowers at the scene of the killing after the Ministry of Defence confirmed the victim was a serving soldier Mr Cameron said it was 'natural' that questions would be asked about 'what additional steps can be taken to keep us safe' but he added he was 'not in favour of kneejerk responses'. During the hour-long meeting there was an update from the police and agencies into the ongoing investigation and an update from the MoD on protective security. It is understood military commanders last night issued guidance to all serving personnel in London to not wear their uniforms in public. Ministry of Defence sources said this had been part of an "automatic" tightening of security following a major incident. Though the victim of the Woolwich atrocity was not in uniform, it is understood he was wearing a Help for Heroes hooded top and carrying a military camouflaged rucksack. But Mr Cameron is thought to have intervened and troops are being told to wear their uniforms as normal. The Prime Minister used his personal Twitter account last night to issue the defiant message: 'We will never buckle to terror.' Colonel Richard Kemp, who commanded British forces in Afghanistan, said any change to rule son uniforms would 'suggest we live in a state of fear of this type of attack continuing'. As the MoD formally confirmed the dead man was a serving soldier, Mr Hammond said: 'I am shocked by the brutality of this cold-blooded murder of a serviceman on the streets of London. We are co-operating with the Metropolitan Police in their investigation and will take all steps necessary to protect our servicemen and women. My thoughts are with the family and loved ones of the deceased. Chief of the Defence Staff General Sir David Richards said: 'I was appalled to hear of this abhorrent crime committed against one of our servicemen. I add my voice to that of the rest of the country in condemning this foul act and I extend my deepest sympathies to the family and loved ones of the victim during this most distressing time. Armed: Military personnel in uniform stand guard at Woolwich Barracks today where security has been tightened Defiant: Soldiers walk outside Royal Artillery Barracks, Woolwich Headquarters, close to the scene where a soldier was murdered in John Wilson Street Floral tributes, and a T-shirt, have been left outside the Royal Military Barracks, near the scene where a solider was brutally murdered in broad daylight London Mayor Boris Johnson hinted that security services believe the horrific attack was a one-off and do not expect a wave of similar killings. He told reporters: 'Everything I am hearing leads me to think that Londoners can go about their business in the normal way and we are going to bring the killers to justice.' Ahead of the talks Mr Cameron said he had received an update from Mr Hogan-Howe on the "sickening killing." During the hour-long meeting there was an update from the police and agencies into the ongoing investigation and an update from the MOD on protective security. There was a discussion about community cohesion. A Downing Street spokesman said: 'The strength and unity of response from Muslim community leaders was recognised and commended by ministers and others around the table.' Labour leader Ed Miliband, who has been briefed on the security situation by Mr Cameron, backed the message of unity. He said: 'This was an appalling and horrific murder and all of my condolences are with the families and friends of the victim, and indeed with our troops because they serve incredibly bravely all around the world and they've seen one of their own murdered in an act of complete cowardice. They've tried it before in London and they've failed and they will always fail.; Meeting: Home Secretary Theresa May and Defence Secretary Philip Hammond (left) pictured arriving for today's meeting of Cobra The Prime Minister last night cancelled talks with French President Francois Hollande in Paris to travel urgently to back to London to take charge of the government's response. Two men armed with knives repeatedly stabbed and tried to behead an off-duty soldier in front of dozens of passers-by on a crowded street in Woolwich, East London yesterday afternoon. Video footage shows one of the attackers with blood on his hands and clutching a meat cleaver declaring: 'We swear by almighty Allah we will never stop fighting you. The only reason we have done this is because Muslims are dying every day. This British soldier is an eye for an eye, a tooth for a tooth. Arriving at Downing Street, Mr Johnson sought to counter claims made by the attackers that the killing was the result of British troops serving in Afghanistan. He said: 'It is completely wrong to blame this killing on the religion of Islam. But it is also equally wrong to try to draw any link between this murder and British foreign policy or the actions of British forces who are risking their lives abroad for the sake of freedom. The fault lies wholly and exclusively in the warped and deluded mindset of the people who did it Boris Johnson arrived at Downing Street for the Cobra meeting with a warning that the Woolwich knife attack must not be blamed on British foreign policy. It is completely wrong to blame this killing on the religion of Islam, but it is also equally wrong to try to draw any link between this murder and British foreign policy or the actions of British forces who are risking their lives abroad for the sake of freedom. The fault lies wholly and exclusively in the warped and deluded mindset of the people who did it. What we need now is, for the sake of the victim and the sake of his family, for those killers to be brought to justice. I think I want to pay particular tribute, not just to the work of the police and security services yesterday. But also, above all, to the people of Woolwich, who showed such exemplary courage and bravery in a very difficult situation indeed. The people of London should take their cue, from the behaviour of the people of Woolwich yesterday, who showed such astonishing natural courage in dealing with an appalling event, and who stood up to these killers. 'I think that that's the spirit of London, and that's what I would call upon people to do today: go about their lives in the normal way.' Baroness Neville-Jones, former chairman of the Joint Intelligence Committee, said the security services would examine whether the attack was carried out by a "lone wolf" or by someone with further connections, either at home or abroad. She told BBC Radio 4 she was "inclined" to think the "isolated attack... is possibly more in the nature of a lone wolf." But she warned it is "particularly hard to deal with because there are very few outward signs beforehand of the nature the intelligence services can pick up." Colonel Richard Kemp, who commanded British forces in Afghanistan, said a ban on uniforms in public would be wrong. 'As we saw in this case you don't need to have somebody in uniform, you just need to have someone who knows a bit about soldiers and does a bit of observation in the vicinity of a barracks and you can identify a soldier very quickly,' he told the BBC. I think we should be right to think about ways of protecting ourselves better but I think it would be wrong to suggest we live in a state of fear of this type of attack continuing. He also warned "further attacks will be inspired by this type of attack." He said more resources needed to be put into the role of websites in radicalising people. The security services should "look very carefully at which radical sites should be suppressed on the internet," he added. Last night Mr Cameron described the attack as "truly shocking" and 'the most appalling crime'. He had been at a Brussels summit before travelling to Paris but tore up his schedule to receive a detailed telephone briefing on the latest from Woolwich from Home Secretary Theresa May. Mrs May last night chaired the first meeting of the Cobra emergency committee. After being briefed by the head of Scotland Yard and the director of the security services, she branded it a "barbaric case," adding that "there is a strong indication that it was an act of terrorism." The Home Secretary added: "This attack was an attack on everyone in the United Kingdom, and it will be condemned by people from every community. Horrific: Clutching a bloodied meat cleaver, the man says 'you people will never be safe' after butchering a young soldier in the street in Woolwich, south-east London, yesterday afternoon Mr Cameron gave a brief press conference from the Elysee Palace before returning to London last night. He said: "People across Britain, people in every community, I believe, will utterly condemn this attack. Did you witness the killing and take pictures or video? Deputy Prime Minister Nick Clegg condemned a "shocking and horrifying murder on the streets of our capital." 'The whole nation's thoughts will be with the family and friends of the victim this evening. David Cameron returned to Downing Street last night (left) after cutting short a trip to Paris, where he gave a short press conference (right) at the Elysee Palace describing the Woolwich killing as 'absolutely sickening' Labour leader Ed Miliband cut short a visit to Germany to return to the UK. He promised the Labour party would offer the government "complete support" in ensuring the killers "face the full force of British justice." Mr Miliband said: 'This is a truly appalling murder which will shock the entire country. Britain will 'never buckle' in the face of terrorist incidents, David Cameron vowed last night, as he condemned the 'absolutely sickening' killing in London. 'Iur thoughts should be with the victim, with their family, with their friends,' the Prime Minister said. A statement from the Muslim Council of Britain said: "This is a truly barbaric act that has no basis in Islam and we condemn this unreservedly. However Respect MP George Galloway was condemned by critics after writing on Twitter: 'This sickening atrocity in London is exactly what we are paying the same kind of people to do in Syria.' Scout leader who confronted killer spoke for us all Confrontation: Ingrid Loyau-Kennett, 48, was seen remonstrating with one of the killers whose blood-covered hands were carrying at least one knife used to hack the soldier to death David Cameron today paid tribute to a Cub Scout leader who confronted one of the Islamic fanatics after he had slaughtered a soldier in Woolwich. The Prime Minister said the bravery Ingrid Loyau-Kennett showed how communities will unite to defeat extremism in Britain. The moment the fearless mother-of-two remonstrated with one of the killers, whose hands were blood-soaked and still carried knives, was filmed in the aftermath of the terror attack. Today the suspect who gave a chilling rant to camera moments after the murder was named online as British Nigerian Michael Adebolajo - who is known by the Muslim name Mujahid. 48-year-old Ingrid Loyau-Kennett jumped off her bus when she saw the tragic soldier's body lying in the south-east London street, checked his pulse and then tried to talk to the men who hacked him to death. After pleading with them to hand her the weapons, one told her: 'We want to start a war in London tonight'. Mr Cameron said: "Confronting extremism is a job for us all. And the fact that our communities will unite in doing this was vividly demonstrated by the brave cub pack leader - Ingrid Loyau-Kennett. 'When told by the attacker that he wanted to start a war in London she replied "You're going to lose. She spoke for us all. 'Defeat extremism by standing together': PM's statement David Cameron said he would not support 'knee-jerk' responses to the attack What happened yesterday in Woolwich has sickened us all. On our televisions last night - and in our newspapers this morning - we have all seen images that are deeply shocking. Today our thoughts are with the victim - and with his family. They are grieving for a loved one and we have lost a brave soldier. This morning I have chaired a meeting of COBRA. And I want to thank the police and security services for the incredible work they do to keep our country safe. There are police investigations and security service operations underway - so obviously there is a limit on what I can say. But already a number of things are clear. First, this country will be absolutely resolute in its stand against violent extremism and terror. We will never give in to terror - or terrorism - in any of its forms. Second, this view is shared by every community in our country. Confronting extremism is a job for us all. And the fact that our communities will unite in doing this was vividly demonstrated by the brave cub pack leader - Ingrid Loyau-Kennett - who confronted one of the attackers on the streets of Woolwich yesterday afternoon. When told by the attacker that he wanted to start a war in London she replied "You're going to lose. The Police and Security Services will follow every lead, turn over every piece of evidence, make every connection and will not rest until we know every single detail of what happened and we've brought all of those responsible to justice. I know from three years as being Prime Minister that the police and intelligence agencies work around the clock to keep us safe from violent extremists. I watch their work every week. They do an outstanding job. They show incredible heroism, much of which can not be reported. They have my staunch support and the support of the whole country. The point that the two suspects in this horrific attack were known to the security services has been widely reported. You would not expect me to comment on this when a criminal investigation is ongoing. But what I can say is this. As is the normal practice in these sorts of cases, the Independent Police Complaints Commission will be able to review the actions of the police and the Intelligence and Security Committee will be able to do the same for the wider agencies. After an event like this, it is natural that questions will be asked about what additional steps can be taken to keep us safe. I will make sure those questions are asked and answered. But I am not in favour of knee-jerk responses. The Police have responded with heightened security and activity - and that is right. But one of the best ways of defeating terrorism is to go about our normal lives. And that is what we shall all do.