Speaking at a resumed hearing at Hertford Coroner's Court, Mr Lawson says the British Transport Police investigation into the tragedy on October 17 is due to last for at least another four or five months.

He further adjourned the hearing until April 10, 2001, at Hertford County Hall, when he says he will review the situation.

Mr Lawson says he has written to the Health and Safety Executive, Railtrack, rail contractors Balfour Beatty, and lawyers for Mr Alcorn and Mr Arthur asking for their views on what evidence will be presented at the inquests.