And will it be contes chelsea or wengers arsenal who win this weekends fa cup final . In sportsday, well be live at manchesters great city games, where some of britains top athletes have come to compete in athletics. Good evening and welcome to the bbc news at six. Britains top Counter Terrorism officer says they have captured a large part of the Terror Network involved in the Manchester Arena attack, where 22 people died. Mark rowley said immense progress had been made in the investigation, but there were still important lines to pursue and arrests to be made. It comes ahead of a Bank Holiday Weekend where more than 1000 Public Events are taking place. The Terror Threat remains at a critical level, which means another attack may take place imminently. Daniel sandford reports. And already vast investigation, still expanding. Each day Counter Terrorism detectives raid more properties in manchester, cutting through the shutters at this moss side barbershop. The shop was run bya moss side barbershop. The shop was run by a cousin of the manchester bomb. He was arrested earlier in the week, with at least one of his brothers. Police also raided another house in the middle of the night, bringing the number of people in custody to eight, all men, mostly libyan, and aged between 18 and 38. Very significant arrests. We are very happy we have our hands around some of the key players we are concerned about. There is still a little bit more to do. The bomber, salman abedi, came back to manchester from libya last salman abedi, came back to Manchesterfrom Libya Last week. Renting a flat in this block, he had already bought many of the ingredients for his lethal device. It was here that he spent his last weekend, putting his bomb together, making the final preparations to attack a concert full of teenage girls. Detectives say they have made very significant finds and crucially believe they have captured a large pa rt believe they have captured a large part of his terrorist network. We have hundreds of officers working on this investigation from across the national Counter Terrorism policing network. We have seized thousands of exhibits which are being assessed. It is fairto exhibits which are being assessed. It is fair to say there has been enormous progress with the investigation but still an awful lot of work to do. I understand the fines include bomb making chemicals but because of concerns about what might still be out there, the threat level remains a critical, the Home Secretary saying people could expect much higher security at the 1300 events across the country this bank with a weekend. I hope they will ta ke co mfo rt with a weekend. I hope they will take comfort from that, be able to feel more secure, because we must not let this terrible Terrorist Incident Impact on our lives. Lets carry on this Bank Holiday Weekend with ourfamilies carry on this Bank Holiday Weekend with our families and friends. Already people getting away for the weekend can expect to find armed officers patrolling trains Outside London for the first time. As the investigation continues, we are learning more about Salman Abedis father, who was detained in libya this weekend. He is believed to have had strong connections to abu qatada, who was suspected of being a senior alqaeda figure in london. This businessman says that the bombers father was always seeing abu qatada in the capital. He was one of abu qatadas supporters, he told the bbc. Whenever he went to london they would meet up. Detectives do not pretend to have the full picture yet. They are growing in confidence but for now, going into one of the most important weekends of the summer, everyone is nervous. We can go live to daniel now. How can police be so confident that theyve got most of this network . Well, we have watched this week as detectives have put this case together. First they arrested the bombers brother, then his cousins, then a Wider Network of acquaintances. Ultimately, some of them may be released without charge, but we have also watched as search teams have blasted their way into property after property. What they found, bomb making materials and ingredients, has slowly given them confidence that they have a good picture of exactly what happened, and that has been important for them in growing in confidence as the week has gone on. That is why they finally feel that they do have this network under control. That is why, i think, that although the threat level remains at critical, it is more because they are nervous about bringing it down too quickly, than that they really feel there is a real threat as we go into the Bank Ona Real Threat as we go into the bank on a weekend. Thank you, daniel sandford. Jeremy corbyn has placed tackling terror at the centre of an Election Campaign speech, his first since mondays bomb attack. He declared that the War On Terror is not working, and he pledged to change British Foreign policy if labour were to win the election, to reduce the threat to the country. Political opponents have criticised the timing of his speech, as well as his message. Vicki youngs report contains Flash Photography from the start. Jeremy corbyn knows that this is a sensitive time. After a terrorist atrocity, The Labour Leader restarted his Election Campaign today, Joining A Silent Tribute to manchesters victims. But he did not backtrack from long held views on Foreign Policy, making his case that it is time to do things differently. Many experts, including professionals in our intelligence and Security Services, have pointed out the connections between wars that we have been involved in all supported and fought in the in other countries, such as libya, and terrorism here at home. That assessment in no way reduces the guilt of those who attack our children. Stressing his patria tuson, mr corbyn repeatedly emphasised that nothing excuse to mondays massacre. And he had a direct message for britains soldiers. Under my leadership, you will only be deployed abroad when there is a clear need, and only when there is a clear need, and only when there is a plan that you have the resources to do yourjob and secure an outcome that delivers lasting peace. Mr corbyn promised that a Labour Government would give the Security Services the money they required, and cuts to Police Budgets would be reversed. The issue of security could dominate the rest of this Election Campaign and today Jeremy Corbyn has repeated views he has held for decades that Military Action abroad has made the uk less safe. To others, that sounds like an excuse for terrorism. Senior conservatives were quick to hit out at The Labour Leader, calling his speech monstrous. This has been caused not by us, asJeremy Corbyn would have us believe. It has been caused by a sick ideology, a perverted version of islam, that hates us and our way of life. To say anything now to legitimate or justify those who have carried out the atrocity in manchester is, in my view, absolutely obscene. The arguments have returned and so have photo opportunities. The snp leader condemned the Manchester Attack but said politicians should not shy away from debate. Bombing campaigns, whether in syria or libya, Without A Coherent Strategy to tackle the underlying problems, often hinder rather than help the situation. These are the things we need to debate vigorously. This evening, mr corbyn faced more questions, this time on defence. Did he agree with Labour Party Policy to renew trident . I voted against the renewal. Everybody knows that. Can you tell the british people you support the renewal of trident . We are going ahead with the programme. Do you support it . My views on Nuclear Weapons are well known. I wa nt to Nuclear Weapons are well known. I want to achieve a Nuclear Free World through multilateral disarmament, through multilateral disarmament, through the non proliferation treaty. How a country protect its citizens is likely to be high on the agenda for the rest of this Election Campaign. And you can watch the full interview with Jeremy Corbyn at 7pm on bbc one. Meanwhile, theresa may has told World Leaders at the g7 summit in sicily that more needs to be done to tackle foreign fighters seeking to return from conflicts in the middle east. The Prime Minister also called for concerted pressure on Technology Companies to remove extremist material from the internet. From sicily, john pienaar reports. Stagey affairs, these summits. Beautiful settings, big stars, some loving the spotlight. Britains leader, keen to use it. Sometimes it is hard to move, let alone grab attention here, all with those watching at home. You canjust attention here, all with those watching at home. You can just see theresa may behind donald trump. But after the outrage in manchester, she was keen to lead the line against terrorism. She urged leaders to do more against online extremism, to get Web Companies to identify and block harmful content, to alert authorities. She wanted action against terrorists stepped up. The threat of terrorism on all of our countries face. And now more than ever, we must strengthen our resolve to ove rco m e ever, we must strengthen our resolve to overcome this threat together and stand firm against those who want to destroy our precious values and way of life. No one imagines there are easy a nswe rs of life. No one imagines there are easy answers to terrorism, here at the summit, or anywhere else. As Party Campaigning resumes, the differences are profound. Mrs may will not want to be accused of exploiting this summit for political gain. She will want voters to judge that she is the one best qualified to lead our party and the country. Earlier, she met the new french president. A message here was the same as hermitage all day. The incident shows why it is so important trust to Work Together in defeating terrorism. We know how it can hurt. Agreement to cooperate against extremist was easy to find. Leaders who do not always get on did manage it here. Mrs may suggested more help for countries in conflict zones more help for countries in conflict zones detaining foreign fighters. The summit statement, pledging countries to do more together, was signed and sealed. Sticking together on an issue like terrorism is a must for leaders at a big summit, and it is not just for show. For leaders at a big summit, and it is notjust for show. Dealing with the problem might this takes problems dealing with a problem like this takes time and patience to tackle a problem that will persist long after occasions like this have come and gone. Following mondays attack, the police and Security Services say theyre keeping an eye on 3000 people of interest, and that they have 500 active investigations to deal with. This weeks atrocity has again raised questions about government strategy, and whether it has the right powers to deal with those who pose a possible risk. Mark easton reports. The Death Of Lee Rigby in woolwich, 2013, prompted David Cameron to reshape his strategy. The focus was on home grown extremism with Public Sector workers to inform police if they thought someone was displaying extremist behaviour. The government set up an extremism target, counter extremism bill, tough powers against anyone deemed to be an extremist. But the legislation now looks unlikely ever to happen because ministers struggled to define extremism, and concerns the approach fosters suspicion and distrust in largely law abiding muslim communities. The Terror Attacks in paris in 2015 sent a shockwave across europe. In the uk, ministers responded by announcing an extra 1,900 spies and 1,000 more Police Firearms officers. We have been building the capability of police here in the uk to respond. But the number of Firearms Officers is actually 1,300 lower than 2010. The attack in Westminster Last march once again focused concerns on keeping track of individuals known to have radical views. There were questions as to why people like the murderer, khalid masood, couldnt be monitored and if necessary detained. Security services have 3,000 people under investigation in active operations but only seven people have their movements restricted under special power. The courts take a dim view of limiting peoples freedom if they havent been convicted of a crime. The dreadful bombing in manchester was followed by claims that cuts to policing may have contributed to the attack an accusation emphatically denied by the government. Ring fenced money for the polices Counterterrorism Effort has increased over the last few years, from £591; million in 2015 16, to £675 million now. But that doesnt tell the whole story, because that money comes out of the total police budget. Central government money for police has actually fallen 25 since 2010. In greater manchester, Police Counterterrorism funding is up £6 million but the force says its overall budget must go down £14 million. Spotting, monitoring and neutralising the treat the threat. From home grown terrorists is partly about resources, of course, but its also about creating a society where such an ideology cannot breed and thrive. All of those who died in mondays attack have now been named. The 22nd victim was 15 year old megan hurley, from halewood in merseyside. Danny savage reports from manchester now on a Community Grieving for lost family and friends. In Central Manchester today, people queued to buy flowers in remembrance of strangers. Many are at a loss about whats happened, but have to do something. It was inconceivable to try and understand how the families are feeling, especially of the children. Its just shocking. Ive been a Coronation Street Superfan my entire life. 29 year old martyn hett was one of those murdered on monday night. The outgoing Coronation Street Superfan was well known online. As these possibilities got less and less and less, you still had some hope there would be something, and when you actually got the call that actually confirmed that he had died in this terrible explosion, its, its indescribable. Your world just collapses, terrible. The final and 22nd victim to be named today was 15 year old megan hurley. Her brother was seriously injured too. A note on the Family Business only hints as the true enormity of the tragedy. A picture of the horror which faced the First Responders has emerged too. 0n the right here, is paramedic adam williams. He is worried about the long term effects on him and his colleagues. That is a big concern for all of us. Possibly myself, there will be some permanent scars there, emotionally. And i do worry that my colleagues will suffer the same. There is a very sombre and respectful atmosphere here. It may be four days since the atrocity, but that really is just the blink of an eye, and people here are stilljust trying to come to terms with what happened and coming to pay their respects. 22 lives lost, countless others changed forever. Families left with just memories of those who will never come home. Danny savage, bbc news, manchester. Despite the traumatic events of earlier in the week, manchester has today been gearing up for a big Bank Holiday Weekend of sport and music. This evening, the city centre is being transformed for the great city games, which is a free athletics event. Therell be an increased security presence, of course, yes, and in the shadow of the town hall, the mens long jump is under way here, a few minutes ago we saw a double 0lympic medallist Greg Rutherford taking part, to a great reception, there is a wonderful atmosphere here and a good crowd. The organisers have told me that they know the tone of this years games will feel different. They say that their thoughts and the thoughts of everyone here are with those affected by the arena attack, and that this is a vital part of showing manchester getting back on its feet. Its not just the atletes that are racing in manchester. After the attack, preparations were put on hold,