"This afternoon police officers raided the office of Daniel Kawczynski, MP for Shrewsbury.
Why? They demanded to trawl through his constituency correspondence while investigating letters that have been sent by "someone in the Shrewsbury area" - apparently. They do not appear to have had a warrant.
The Commons authorities - the Speaker and the Sergeant at Arms - did not know of the raid. They were not informed of the raid, nor aware of what happened until told afterwards."