A FORMER BBC security guard yesterday admitted playing a part in a two-year terror plot, which included a possible attack on Royal Wootton Bassett.

Muslim convert Richard Dart is now facing a long prison sentence after admitting his involvement.

Dart became involved in extremism after converting to Islam. He was featured in a BBC Three documentary made by his stepbrother.

at the Old Bailey he pleaded guilty, with Imran Mahmood and Jahangir Alom, to engaging in conduct in preparation of terrorism. They plotted to go to Pakistan to train at a terrorist camp and to travel abroad to commit acts of terrorism.

The three bearded men appeared by videolink and were remanded in custody by Mr Justice Simon for reports before being sentenced, on a date to be fixed.

Dart, 29, of Broadway, Ealing, west London, Mahmood, 21, from Dabbs Hill Lane, Northolt, west London, and Alom, 26, of Abbey Road, Stratford, east London, admitted being involved in the offence between July 2010 and July last year.

The case against them was that they intended to use their training to attack targets.

Mahmood, who had been to Pakistan before, was able to offer advice and assistance.

Police recovered bits of text messages from a computer in Dart’s home which referred to “to just deal with a few MI5 MI6 heads.”

Another referred to WB, thought to refer to Royal Wootton Bassett, through which hundreds of military heroes were repatriated.

Details of the allegations were not given in court and lawyers will have to discuss their basis of plea before the facts are finalised.

Dart, the son of teachers from Dorset, appeared in the film My Brother The Islamist by Robb Leech.

In it, Dart is said to have been turned into an extremist months after joining the Muslims Against Crusades group and listening to controversial activist Anjem Choudary.

He changed his name to Salahuddin al-Britani.

Alom, who lives near the Olympics site in Stratford, was arrested in July along with his new bride Ruksana Begum, 22, whose family has extensive links to terrorism.

In December she was jailed for a year at the Old Bailey for having al Qaida terrorist material in her mobile phone. The link between them could not be made until yesterday, when a court order was lifted.