Should TV cameras be allowed in British courts? TV news, says Baroness Kennedy, can never replicate the intricate detail of a criminal trial - especially the tiny reactions of judge, lawyers and defendants as the case unfolds. "The jury see very subtle movements of an accused responding to evidence," she says. The fluttering of the eye cannot be replicated by a camera. Should TV cameras be allowed in UK courts? The Murder Trial certainly has to be selective. The documentary is a full two hours long, but it is dealing with six weeks" worth of court proceedings. It also doesn't identify any of the jurors. But footage of other participants - not least the defendant, Nat Fraser - is fascinating. In 2003, Fraser was convicted of murdering his wife, Arlene. A series of appeals ended with his conviction being declared unsafe, leading to this retrial in 2012. With his glasses, and his unflappable demeanour, Fraser doesn't look like his liberty's at risk - he could be just another of the middle-aged white men (barristers, judge) who furnish the courtroom. In England, though, courtroom sketches will continue to be the only pictures of defendants like Fraser for a while yet. Bucks says that "realistically, it's going to be a long time" until broadcasters have the kind of access that would allow news programmes to show footage of defendants in the dock. If the Court of Appeal trial goes well, the Government plans to allow filming of judges" sentencing remarks in the Crown Court - but has said that legal argument and evidence will be excluded. "Our aspirations to go further are tempered by our belief that it needs to be done in a way that doesn't bring either our coverage or the courts into disrepute, or to get in the way of the course of justice," says Bucks. But Bucks does believe that broadcasting the courts could educate people about them, citing Oscar Pistorius's bail hearing - which was made available by audio only - as highly illuminating about the South African legal system. He also points to Milly Dowler's parents" powerful evidence at the Leveson Inquiry to support his argument that ordinary people can give evidence at televised hearings without being cowed by the cameras. For Bucks, though, the overriding principle is transparency. "The courts are funded by our money," he says. They're there for the benefit of the people, and we should be allowed to see what our money is paying for. "The Murder Trial" is on Channel 4 at 9.00pm tomorrow night