'Hats off to mum - we're glad he's dead': Brothers abused by convicted paedophile say they were relieved when their mother stabbed the sex offender to death Sarah Sands stabbed paedophile Michael Pleasted, 77, eight times in 2014 The convicted paedophile had groomed and abused three of her young children It later emerged he changed his name from Robin Moult to conceal his past Her sons have now waived their right to anonymity to reveal the whole story They described feeling 'safer' knowing that their mother had killed their abuser Bradley, 20, said: 'I thought hats off' when he learned she attacked Pleasted Mrs Sands was jailed for seven and a half years for manslaughter after killing Three brothers attacked by a paedophile who changed his identity to hide his 24 child abuse convictions today admitted that they are 'glad' he is dead after their mother killed him to protect them. Sarah Sands drank two bottles of wine and went to the home of Michael Pleasted, 77, in a neighbouring block of flats in east London and stabbed him eight times in 2014. Her brave sons have all turned 18 and waived their right to anonymity to support their single mother, who is out of prison after four years and now campaigning for a tightening of the rules on sex offenders being allowed to change their names. ADVERTISEMENT One of her boys, Bradley, admitted that he had immediately thought 'hats off' to her when he learned she had stabbed Pleasted to death. His twin siblings said they felt 'safer' after he was killed. Reece, then aged 11, said it was 'nice knowing that he was dead'. In an extraordinary new BBC documentary, called Killing My Children's Abuser, the boys were asked if they were happy Pleasted had died. They replied immediately, and in unison: 'Oh yeah, definitely'. Reece added: 'What were they doing letting him out on bail? What would make you think that he's not going to think: "I know I'm going to get caught. I know I'm going to do time. Let me get four or five more kids".' The mother of five was also filmed sobbing outside the flat where she stabbed her victim, saying: 'He took everything from me. Still to this day there are no words to describe how it eats you up from the inside. He ripped my family apart. 'He ruined my life and he tried to take away the most precious thing in my life. Those babies, they are not going to wake up one day and this hasn't happened. I'm never going to be able to take it away from them when they're screaming in the night. 'I couldn't tell them it was a dream – because it wasn't – he was our living nightmare. It eats me away at me because they're my babies. I'd give my life for them'. Pleasted had abused three of her children and other young boys on the estate and had already been convicted for three decades of child abuse offences including 24 convictions. A legal loophole allows registered sex offenders to change their name by deed poll. The ploy can help individuals get a new driving license and passport and even a new, clean, DBS criminal record check to allow them access to children, Labour MP Sarah Champion has warned. Sons are in strong support of mum who killed their abuser Loaded: 0% Prress: 0% / DuraTim Fullen Sarah Sands (left) and her sons (left to right) Reece, Bradley and Alfie tell the full story about Pleasted and his manslaughter on BBC Breakfast this morning +17 View gallery Sarah Sands (left) and her sons (left to right) Reece, Bradley and Alfie tell the full story about Pleasted and his manslaughter on BBC Breakfast this morning Mrs Sands took a knife (circled) and went to the paedophile's flat in east London where she stabbed him eight times +17 View gallery Mrs Sands took a knife (circled) and went to the paedophile's flat in east London where she stabbed him eight times The building's CCTV footage shows Sarah leaving the flat block after killing Pleasted in his home +17 View gallery The building's CCTV footage shows Sarah leaving the flat block after killing Pleasted in his home Michael Pleasted, 77, was a convicted paedophile who abused children before changing his name, moving and assaulting even more victims +17 View gallery Michael Pleasted, 77, was a convicted paedophile who abused children before changing his name, moving and assaulting even more victims A family photo of Reece, Bradley and Alfie when they were young children +17 View gallery A family photo of Reece, Bradley and Alfie when they were young children Pleasted had abused three of Mrs Sands's children and other young boys on the estate. Pictured: Two of the Sands boys +17 View gallery Pleasted had abused three of Mrs Sands's children and other young boys on the estate. Pictured: Two of the Sands boys Mrs Sands returns to the estate in Silvertown where the family and Pleasted lived +17 View gallery Mrs Sands returns to the estate in Silvertown where the family and Pleasted lived The mother of five is now campaigning to stop sex offenders being able to change their name, allowing them to target more victims +17 View gallery The mother was jailed in 2015 for manslaughter after stabbing the paedophile who abused her three sons +17 View gallery The mother of five is now campaigning to stop sex offenders from being able to change their name, allowing them to target more victims. She was jailed in 2015 (right) for manslaughter after stabbing the paedophile who abused her three sons TRENDING Drivers urged to use these little known defrosting tips this winter which can take the ice off windscreens in 'SECONDS' Scam website helped criminals steal £50m from victims in the UK by making it appear staff from their bank were calling on business 'He showed no fear, he was not remorseful at all': Mother tells of moment she stabbed convicted paedophile to death for abusing her three sons and reveals how he tried to grab the knife as he told her 'your children are lying'