Defence Secretary Liam Fox has jetted into Libya as allegations over his working relationship with a former flatmate continued to surface back home.

Dr Fox met with Jalal al-Digheily, defence minister in the Libyan National Transitional Council at Tripoli airport, but the landmark visit is set to be overshadowed by continuing claims over his dealings with Adam Werritty.

More allegations were made about Mr Werritty, a close friend of Dr Fox, who has made 14 visits to the Ministry of Defence over 16 months despite not being employed by the Government.

Mr Werritty arranged a meeting in a Dubai hotel, away from officials, with Dr Fox and a company interested in selling technology to the MoD, The Independent claimed.

And Mr Werritty, best man at Dr Fox's wedding, ran right-wing charity Atlantic Bridge from inside the Secretary of State's parliamentary office, the Guardian alleged.

And a second Commons business card stating the friend worked for the MP has been uncovered, despite him not being on any official payroll, according to The Times.

Labour's Jim Murphy urged the Secretary of State to disclose the nature of the business dealings with Mr Werritty and branded it "ridiculous" that Dr Fox had instead launched an internal inquiry into himself.

Mr Murphy told Channel 4 News: "We want specific answers to direct questions about just why one individual, who is not on the payroll of the Ministry of Defence or the House of Commons, has such a close working relationship inside the Ministry of Defence.

"There is a pattern of behaviour here that is puzzling and I think we need to get to the bottom of it.

"There has been a series of accusations, each of which in turn was denied, and in turn the denial itself has had to be denied."