The family of a father-of-four who disappeared 13 years ago believe that a television appeal is their last shot at solving the mystery.

James Scott has been fighting for answers about what happened to his younger brother Raymond Scott, who went missing without a trace in November 2001.

Raymond, a 47-year-old self-employed odd jobs man from Stanmore, has never been found, leaving his wife Sandra and four children Alan, Dean, Grant and Stacy, unable to hold a funeral or to grieve properly. He would have celebrated his 60th birthday last week.

In a long-running personal campaign, Mr Scott, 63, has been lobbying investigating officers at the Metropolitan Police to release to the public one of the only leads in the case : closed-circuit television footage that shows a male caller making a menacing telephone call to him from a payphone at South Harrow Tube station several months after Raymond went missing.

The BBC's Crimewatch programme released the footage - of the morning of Sunday, April 28, 2002 - for the first time during the show last night.

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Mr Scott, who lives in Northampton, said: “I know Raymond is dead, because I know my brother and he would have been in touch.

“You fight something for 13 years and this is it now. After this we don’t have any more clues and that is scary.

“Someone is hanging onto information and there are four children and a wife, brothers and sisters that suffer every single day. If you know where that body is - because there is a body out there - tell us where it is. Let’s give his children closure.”

Detectives are keen to speak with the man in the CCTV footage and are offering a reward of up to £20,000 for information leading to the identification, arrest and prosecution of anyone responsible for Raymond's disappearance.

He was last seen on November 16, 2001, by a third Scott brother, Kenny, at whose house in Wealdstone he had been doing DIY. He drove away in his white Ford Transit van, with number plate D346 DPR. It was abandoned and found a fortnight later, dumped by youths who had taken it for a joyride.

The youngsters later told police they had driven from Field End Road, Eastcote, which was verified by a traffic warden who remembered giving the van a parking ticket.

Detective Chief Inspector Andy Partridge, from the homicide and major crime command, said: “I believe the man featured in the CCTV footage may be significant to this investigation. We know he made a telephone call to Raymond's brother from South Harrow Station at 8.43am.

“I hope that the release of this footage will prompt contact from either the man himself or anyone else who can identify him.

“They want to move forward but can't whilst this is still unresolved. They need answers and I believe someone out there can provide those answers.”

Anyone with information can call the incident room on 0208 358 0300 or to remain anonymous, call Crimestoppers on 0800 555 111.