David Cameron's been criticised over the investigation into former defence secretary Liam Fox’s working relationship with his friend Adam Werritty.

A group of MPs has said the Prime Minister should've called in his independent adviser on ministers’ interests to look at claims that the North Somerset MP breached the ministerial code.

The Public Administration select committee say Sir Philip Mawer “was apparently cut out of the loop altogether” despite high levels of media and public interest in the case.