"The Serjeant at Arms and Speaker's Counsel were present when the search was conducted, " he added.

BBC: Police search Commons office of MP Nigel Evans

Acting Serjeant Daniel Field, said he would "miss the energy and enthusiasm he brought to the job" while Acting Serjeant Paul Nancolis said he had given him "great confidence from the type of soldier he was and the type of soldier he could have been".

BBC: Afghan death officer named by MoD

"Their concerns are shared by the Serjeant At Arms and Parliamentary Security Director who believe there is a very real danger that the release of this information could lead to the unnecessary discovery of members' residential addresses and this could provide a security risk, " he wrote.

BBC: MPs expenses: Row over disclosure of MPs' letting details