A former High Court judge who led the inquiry into the Bradford stadium fire which killed 56 football fans has dismissed claims the blaze was not an accident saying they are 'nonsense'. A new book by author Martin Fletcher has revealed a series of other blazes at businesses owned by or associated with Stafford Heginbotham, the club's chairman at the time of the tragedy in 1985. The official inquiry into the blaze, led by Mr Justice Oliver Popplewell, concluded that the fire was an accident, probably caused by a spectator dropping a cigarette into rubbish that had accumulated under an old timber stand at the Valley Parade ground. Former Bradford City chairman Stafford Heginbotham, left, with Mr Justice Popplewell in the aftermath of the Bradford City fire. Today, the former judge has dismissed claims the blaze was not an accident . The stand at the Valley Parade ground burns after a fire in 1985. 56 football fans were killed in the tragedy . Today Sir Oliver was asked about the new allegations in an interview on BBC Radio Leeds, where he rubbished Mr Fletcher's claims. The retired judge said the main flaw in the argument that the fire was arson was that the stand involved had no insurance value as it was due for demolition. He also added that the fire was examined by experienced and thorough investigators, who found nothing suspicious and that no question of arson was ever raised in civil legal proceedings. He explained: 'I'm sorry to spoil what is obviously a very good story but I'm afraid it's nonsense for a number of reasons.' Sir Oliver also rejected claims his inquiry was held too quickly, three weeks after the fire. He added: 'I can quite understand after having previous fires some suspicion being raised but, as far as I’m concerned, we conducted our inquiry perfectly properly and I have no reason believe it was other than an accident.' The new claims about the fire at Valley Parade are contained in the book Fifty-Six by Mr Fletcher, who was 12 at the time and escaped the blaze. Author Martin Fletcher has revealed a series of other blazes at businesses owned by or associated with Stafford Heginbotham, the club's chairman at the time of the tragedy in 1985. He is pictured here with his mother Susan as a 12-year-old . The fire broke out near to half-time during Bradford's game against Lincoln City on May 11, 1985 and within four minutes the stand was completely ablaze. Mr Fletcher lost three generations of his family in the tragedy, including his 11-year-old brother Andrew, the fire's youngest victim, as well as his father John, 34, uncle Peter, 32, and grandfather Eddie, 63. The book, published today and being serialised in The Guardian, does not make any direct allegations but Mr Fletcher says Mr Heginbotham’s history with fires, which he claims resulted in payouts totalling around £27 million in today’s terms, warranted further investigation. He asks: 'Could any man really be as unlucky as Heginbotham had been?' The disaster also occurred at a time, according to Mr Fletcher’s evidence, when the businessman was in desperate financial trouble - and two days after he discovered it would cost £2million to bring the ground up to safety standards required by Bradford’s promotion from the old Third Division. The fire at the ground broke out close to half-time during Bradford's home game against Lincoln City on May, 11, 1985 . An official inquiry found that the fire was started by accidentally when a fan discarded a cigarette on to rubbish below the timber stand . Mr Fletcher is the only survivor to publicly challenge the official inquiry, which took place three weeks after the fire . Mr Fletcher is the only survivor to publicly challenge the official inquiry, describing it as inadequate and saying it took place far too close to the event. Meanwhile Mr Heginbotham’s son James, 47, has defended his father, who died in 1995. He told told the Daily Mirror: 'When you actually do your homework and see what he did for Bradford City Football Club it is a sickening accusation. It is just absolutely ridiculous. 'He never recovered from the fire. The stress of it is what killed him eventually. 'He’s no longer here to defend himself. It’s a real shame it has come to this.' Meanwhile, yesterday former sports minister Gerry Sutcliffe said the new allegations do not justify a new inquiry into the disaster. The remains of the stand after the fire. West Yorkshire Police said the force would consider any new evidence about the blaze, which also injured 265 people . Former Prime Minister Margaret Thatcher visited Valley Parade to survey the damage to the stand and pay her respects with her husband Dennis . Mr Sutcliffe, MP for Bradford South and deputy leader of Bradford City Council at the time of the tragedy, said he knew Mr Heginbotham 'flew by the seat of his pants' in terms of the finances of the club, but remains convinced by the conclusion of the inquiry. West Yorkshire Police said the force would consider any new evidence about the fire. Detective Superintendent Mark Ridley, of the Homicide and Major Enquiry Team, said: 'The jury at the inquest in 1985 delivered a verdict of misadventure. 'However should any evidence come to light which was not available to Her Majesty’s Coroner at the original inquest, then we will consider its significance and take appropriate action.' A minute’s silence is due to be held at every Premier League and Football League match on Saturday, April 25 to mark the forthcoming 30th anniversary of the fire. It was the worst stadium fire in the history of British football and prompted important safety changes in grounds across the land. The final of game of the season should have been a day of celebration for Bradford City. Before kick-off the team were presented with the trophy for winning the Third Division title as 11,076 fans watched on. But instead, May 11, 1985 ended in tragedy as flames engulfed the Main Stand at Valley Parade. The Valley Parade blaze is considered the worst stadium fire in the history of British football and prompted important safety changes in grounds across the land . The fire was spotted at 3.40pm towards the end of the first half and within minutes the stand packed with 4,000 spectators was fully ablaze. The disaster left 56 supporters dead and a further 265 injured. In the years that followed,  new legislation was introduced governing safety at the nation's sports grounds. The tragedy brought about an unprecedented  community spirit in the city, with, among many other initiatives, a fundraising drive for the Burns Unit at Bradford Royal Infirmary. In 2010, on the 25th anniversary, there were an estimated two thousand at the service in the city's Centenary Square but this year there has been such a surge of interest that the club considered moving it to Valley Parade.
Mr Justice Popplewell says he has no reason to believe fire wasn't accident . The former judge led the inquiry into the blaze at the Bradford City ground . Comes after survivor of blaze says tragedy might not have been accident . Author Martin Fletcher says his findings warrant further investigation .