Seed grew up in Cambridge, the son of a university professor, and took A-levels in physics, chemistry, maths and geology, before winning a place at Nottingham University to study physics and electronics.But his promising future went off the rails when he became involved in recreational drugs as a student.During the trial he told the jury: “I used to take LSD every weekend and I sold a friend 10 pills of LSD and I think it was a small amount of marijuana.”The court heard Seed served 21 months of a three-year prison sentence imposed in 1984 for supplying controlled Class A and Class B drugs. Michael Seed – the man who became known as ‘Basil’ – has been jailed for 10 years for his role in the Hatton Garden safe deposit raid.The 58-year electronics expert, was found guilty of conspiracy to burgle and conspiracy to hide the proceeds of the £14 million heist following a trial at Woolwich Crown Court.Referred to by his fellow raiders by the nickname ‘Basil’, Seed is believed to have let himself in to the building in London’s diamond district using a set of keys before disabling the security system.He was then one of two men who climbed into the vault through a hold drilled in the wall to loot 73 safe deposit boxes.Sentencing Seed, Judge Christopher Kinch QC said: “Your role was a central one. You were at the heart of the core activities that had to be carried out.”You were not just there to fetch and carry. In my judgement this must rank among the worst offences of its type.” “These men were career criminals who carried out one of the biggest safety deposit centre heists in British criminal history without a moment’s thought for any of the victims.”For many of the victims these safety deposit boxes contained their life savings and these were cruelly snatched from them by Michael Seed and the previously convicted co-defendants in this matter.” The former Nottingham university student and electronics expert confidently told a jury at Woolwich Crown Court he was not the man nicknamed “Basil” by the rest of the gang.In court he suggested he could have been on a family holiday in Cornwall or visiting his elderly mother, in Cambridge, at the time of the Hatton Garden burglary and told jurors he had never been known as Basil.”Everybody calls me Basil now,” he said. “I’ll be known as Basil for the rest of my life.”But he became the tenth person convicted in connection with the crime when was found guilty of conspiracy to burgle the Hatton Garden Safe Deposit company and conspiracy to handle the proceeds after £143,000 worth of gold ingots, gems and jewellery was found in his bedroom. Seed, who had served a short prison sentence in the 1980s for drugs offences, had never paid any tax, had never claimed any benefits and had no other obvious source of income.He claimed he made and sold jewellery which explained the items that were found in his flat.But prosecutors argued that he posed as a BT engineer to tamper with the security system before the burglary, then used a 2G mobile phone jammer to block the alarm signal.The jury of six men and six women deliberated for 35 hours and 35 minutes before returning their verdicts on Friday. “I have never had an interest in jewellery or even a liking for it.”I got into the recycling jewellery thing because I’m good with my hands.”Unemployed since 2009, Seed has never declared or registered any business in the UK, never declared or paid tax on any earnings and did not receive benefits.He had one Santander bank account, which he used mainly to buy tools and electronic equipment online.Just £9,500 came out between 2010 and 2018, and his rent was regularly paid into a Post Office account in cash.”I have always worked in the black economy,” he said.”I don’t pay tax, I don’t claim benefits. I don’t have an extravagant lifestyle.”I don’t have a car, I don’t have a vehicle, I don’t really go out more than once a week.” Michael Seed was pictured after the raid meeting fellow gang member John ‘Kenny’ Collins Seed was cleared of conspiracy to burgle the high-end Chatila jewellery store in Bond Street over the late August bank holiday weekend in 2010 with members of the same gang.Speaking outside court, Detective Chief Inspector Mark Bedford, the senior investigating officer in the case, told reporters: “The conviction of Michael Seed brings to a close one of the longest investigations in the Flying Squad’s history.”It was a complex and meticulous inquiry into the burglary at the heart of London’s diamond district. CCTV footage from inside Hatton Garden did not show Basil’s faceCredit:PA An estimated £14 million was taken in the raid Collins and Reader are already out of prison but face going back to jail if they fail to pay back more than £6.5 million of the proceeds police believe could still be under their control. Show more The gang drilled through the wall of the vault before making off with £14 million in gems, gold and cashCredit:PA Seed was the youngest member of the gang of ageing criminals, who carried out the daring raid over the 2015 Easter bank holiday weekend.Despite living less than two miles from the scene of the crime, Seed managed to evade capture for three years before police finally tracked him down to his council flat in Islington in March last year. Seed, who became known as ‘Basil’ Credit:Metropolitan Police/PA Well-spoken Seed appeared expressionless moments after the verdicts were returned. Judge Christopher Kinch QC said he will sentence him later on Friday.Seed’s fellow Hatton Garden ringleaders Brian Reader, 80, John “Kenny” Collins, 78, Daniel Jones, 64, and Terry Perkins, who died in prison last year aged 69, were all jailed in 2016. After being released he moved into a one-bedroom council flat in Islington, paying £13 a week.He was still living in the flat at the time of his arrest, although his rent had risen to to £105.Seed told the jury he worked fixing televisions, video recorders and computers before moving into the jewellery trade in the mid-1990s.”It’s purely a thing for money,” he said. Michael Seed has become the tenth person convicted of involvement in the Hatton Garden raidCredit:PA Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. CCTV footage from the Hatton Garden raid, showed a mystery member of the gang, whose face was often covered, but appeared to be wearing a distinctive red wig.He also appeared to have a distinctive walk and during the trial a gait expert, Dr Gordon Burrow, gave evidence suggesting that the “unusual” limp offered “strong support” for the prosecution case that Seed was Basil.