QUESTIONS were raised last night over the credibility of David Laws carrying out a review of the possible alternatives to Britain's Trident nuclear deterrent, given that he is a "part-time Education Minister" who is not based at the Ministry of Defence.

Thomas Docherty, the Labour MP for Dunfermline and West Fife, who sits on the Commons Defence Committee, asked what access Mr Laws would have to sensitive defence information, necessary to take an informed view of the alternatives to Trident.

"Will he be a member of the National Security Committee? Does he have MoD security clearance? Will he have access to civil servant support? What access will he have to the Chief of the Defence Staff and other heads of the services?" asked the backbencher, who is to table a number of parliamentary questions.

Mr Docherty told The Herald: "For two years, the Liberal Democrats have championed this review as a serious, thoughtful and credible piece of work. Having sacked a well-regarded defence minister in Nick Harvey, this review has been handed to a part-time Education Minister.

"It raises serious questions about how much taxpayers' money will be spent on a political sop to the Liberal Democrats."

The review of alternatives to Trident is part of the Coalition Agreement and was being undertaken by LibDem Sir Nick, who, until this month's reshuffle, was the armed forces minister.

He himself has raised concerns about whether his colleague, working out of the Education Department and the Cabinet Office, would have sufficient time to devote to the Trident review.

"He is a very able man, he has got a very empirical mind but I hope that that isn't going to suffer from having somebody not actually on the case," he said.

A LibDem party spokesman dismissed concerns over Mr Laws's ability to undertake the review, saying: "He will be able to carry out the review very effectively."

Mr Laws is expected to complete the review early next year.