A former Railtrack boss has said he feels "vindicated" after corporate manslaughter charges over the Hatfield train crash were dropped.
Gerald Corbett says Hatfield victims are in his prayers
The High Court found no evidence against Gerald Corbett and two other Railtrack executives on Wednesday.
"It is finally completely finished and in many ways I have been very lucky," Mr Corbett told BBC Radio 4.
Former Balfour Beatty executives still face charges over the crash on 17 October 2000, which claimed four lives.
Mr Corbett, who is now chairman of Woolworths, had been facing charges under the Health and Safety Act.
He told Radio 4's Today programme he was not "personally culpable" for the accident.
He said: "Being the boss in itself is not a crime - bosses are guilty if they do something wrong.
"A terrible accident did happen on my watch and as the boss I did take responsibility and I immediately tendered my resignation.
"But that does not necessarily mean that it was my personal fault or that I personally had been negligent."
The Hatfield crash claimed four lives
Mr Corbett said he understood the anguish felt by victims' families because his own father was killed in a car crash.
"Those who died and their families will always be in our prayers," he said.
Manslaughter charges against Charles Pollard, 45, director of the London North Eastern Zone of Railtrack, were quashed on Wednesday.
A Health and Safety charge against Christopher Leah, 55, director of safety and operations at Railtrack, was also dropped.
Speaking outside the court, Mr Pollard said he was "delighted" - but this emotion was tempered by the suffering of the families affected by the crash.
Describing the feeling of facing the charges, he added: "My life has been hellish.
"You think about it every moment of every day - but that is nothing compared to others who were involved in the crash."
The crash occurred when a GNER express derailed half-a-mile south of Hatfield station in Hertfordshire.
Those who died in the accident were Steve Arthur, 46, from Pease Pottage, West Sussex; Peter Monkhouse, 50, of Headingley, Leeds; Leslie Gray, 43, of Tuxford,
Nottingham; and Robert James Alcorn, 37, of Auckland, New Zealand.
Solicitor Louise Christian, who represents one of the Hatfield victims and in addition to other rail crash victims, said: "The Hatfield victims will be absolutely devastated.
"They will feel incredibly let down and the victims of the
 Paddington crash who are waiting to see if charges will be brought in their case, will also be worried now."