Three of Britain’s most dangerous prisoners have been found guilty of murdering a reviled child killer inside one of the country's highest-security jails. Gangland assassin Mark Fellows, known as ‘The Iceman’ or ‘Wakefield Dexter’, Lee Newell – who previously murdered another child killer in jail – and fellow convicted murderer David Taylor ambushed Kyle Bevan, 33, in his cell at HMP Wakefield on November 5 last year.Bevan, serving life for the murder of his partner's two-year-old daughter, was stabbed and slashed more than 25 times in a frenzy lasting almost five minutes before his killers arranged his body to make it appear he was asleep and 'tidily tucked up in bed.'He was left to bleed out during the night and his body was not discovered until the following morning during checks at the troubled Category A jail, nicknamed 'Monster Mansion'.Following just two hours of deliberations, jurors found Fellows, 45, Newell, 57, and Taylor, 63, guilty of murder today after a trial at Leeds Crown Court.As the verdict was read out, one of the defendants could be heard saying: 'It was worth it. Glad I tortured him now.' The men will be sentenced on Friday. Fellows was nicknamed ‘The Iceman’ because of his calm exterior and ruthlessness in carrying out so-called ‘contract killings’ for gangsters in the north west of England.He was already serving a whole-life tariff for the gangland assassinations of Salford 'Mr Big' John Massey and his Merseyside enforcer John Kinsella.Fellows fired 18 bullets with an Uzi submachine gun at Massey in July 2015 before gunning down Kinsella three years later while he was out walking his dogs in St Helens.He later said in letters from prison that he hid in a graveyard wearing a fake beard and mask until Massey arrived home and fired bullets at his feet so he ‘danced like a cowboy’ before firing the fatal shots.He also said, given his whole life term, he could ‘kill people… if I need to.’ Kyle Bevan was serving 28 years behind bars after subjecting two-year-old Lola James to a fatal assault at her home in Haverfordwest, Pembrokeshire, in 2020 Mark Fellows was known as 'The Iceman' or 'Wakefield Dexter' because of his ruthlessness in dispatching fellow criminalsThe killer was also referred to by Taylor as the 'Wakefield Dexter' - a nod to the fictional television vigilante serial killer who targets criminals.Newell, meanwhile, had previously murdered another child killer inside his prison cell and left him dead on a bed.He took Subhan Anwar, 24, hostage in his cell at HMP Long Lartin in Worcestershire in February 2013 before strangling him to death with his own tracksuit bottoms.The court heard there was a 'chilling similarity to that and the circumstances of Kyle Bevan’s death.' Newell has been in prison since the late 1980s after tricking his way into the Norwich home of 56-year-old Mary Neal, whom he strangled to death before escaping with £60.In 2014, Newell lost the sight in one eye after being attacked by double murderer Gary Vinter in the exercise yard at HMP Woodhill.He was subsequently awarded £85,000 after bringing legal action against the Ministry of Justice. The least well-known of the murderous trio, Taylor is a convicted armed robber and career criminal described by one former associate as ‘one of the most dangerous men in the entire prison system’.He joined in the attack on Kyle Bevan while being held on remand for the murder of a 24-year-old woman last seen shopping at an Asda supermarket in 2022.Following today’s guilty verdicts, it can be reported for the first time that he subsequently admitted murdering Alisha Apostoloff-Boyarin.She was last seen shopping near her home in Ashton-under-Lyne, Greater Manchester, with police later releasing CCTV footage of her walking through the supermarket with an unidentified man on January 17, 2022.Police established that Alisha – who lived with her great-grandfather, and was described by detectives as ‘vulnerable’ due to being ‘alcohol-dependent’ - was then driven to Durham in a distinctive gold-coloured VW Passat. Lee Newell has been in prison since the late 1980s after tricking his way into the Norwich home of 56-year-old Mary Neal, whom he strangled to death before escaping with £60She was never seen alive again, with police later saying they believed she had come to ‘serious harm’. It is thought that her body has still not been found.As Taylor was transferred out of Wakefield, he was heard to shout by a nurse in the vicinity of Newell: 'Nice working with you and the Iceman.'Taylor’s criminal record stretches back more than four decades, with crimes including an armed Post Office robbery and the theft of cash from a warehouse.While being held on remand at HMP Frankland awaiting trial for her murder, Taylor asked to speak to a police officer on the pretense that he had information to provide.During the interview, he pulled out an improvised weapon concealed in his waistband and stabbed the officer in the chest, close to his heart.Taylor was convicted of attempted murder and will be sentenced for that offence and the murder of Ms Apostoloff-Boyarin tomorrow.Describing how Taylor has spent most of his adult life behind bars, one associate told the Daily Mail: ‘He wanted to be the top dog and he was happy to take on anyone, whether that was other prisoners or prison guards.‘He has been moved from one top security jail to the next but nothing at all will stop him.'The trial heard details of the animosity between prisoners at the notorious jail, where those who were classed as ‘vulnerable’, often because they had committed serious sexual offences or offences against children, were housed alongside ‘mainstream’ prisoners.This led to increased tensions as so-called ‘main prisoners’ lived in a ‘distorted moral hierarchy’ where they felt paedophiles and such other criminals were beneath them.Bevan – classed as a ‘vulnerable’ prisoner who rarely left his cell – was a target on the wing because of his heinous crimes.He inflicted 101 separate injuries on two-year-old Lola James before delivering a final catastrophic head injury which killed her.He had been ordered to serve at least 28 years behind bars after subjecting the toddler to the assault at her home in Haverfordwest, Pembrokeshire, in 2020.One head injury was so severe it was compared by doctors to something suffered in a high-speed car crash ‘where a child is thrown from the collision.’Bevan’s murder came less than a month after the disgraced Lostprophets singer Ian Watkins, 48, was fatally attacked in his cell at HMP Wakefield.The paedophile former rockstar - who was serving 29 years for child sex offences - was killed on October 11 last year.Last month, a jury in the trial of two inmates accused of killing Watkins was discharged.Rashid 'Rico' Gedel, 25, and Samuel Dodsworth, 44, are due to face a retrial next year.Jurors heard that three men were the last people seen entering Bevan's fourth-floor cell on A-Wing cell – and filmed emerging four minutes and 39 seconds later.During those few minutes, Bevan was subjected to a ferocious and savagely executed attack using makeshift weapons.He suffered catastrophic blood loss after his heart was punctured, his jugular vein severed and his aorta slashed.One of the blows was delivered with such force that the weapon cut through bone.The defendants, who denied murder, declined to give evidence in their defence.In his closing speech to the jury, Mr Pitter said: 'None of them has taken the opportunity to explain to you, to the court, to the police at any stage, what happened. 'We say, that's because they can't.' Before sending the jurors out to consider the verdicts, the judge, Mrs Justice McGowan said: 'This case is about the death of Kyle Bevan. 'It is not about whether mixing vulnerable prisoners and main prisoners is a good way to run a prison.'It is not about whether these defendants or anyone else has a view about how people who commit offences against children should be punished. 'Nobody has a right to kill anyone else because they disapprove of what they have done, or because they hate them. 'It’s a fairly basic premise in a civilised society.'