How far Adam Werritty's connections reach within Government is now part of the official inquiry into Dr Fox.

The PM said on Wednesday that he would consider releasing any details of meetings between other ministers or senior officials and the Defence Secretary's best man. Within hours of it being confirmed it would be published yesterday, the list was under the auspices of the investigation.

Led by the UK's top civil servant, it is looking into claims that the Defence Secretary may have broken the ministerial code.