This article in the Manchester Evening News is unbelievable. It begins:
"An investigation has been launched into claims that cheeky cops are said to have left a fridge-magnet calling card after smashing into the wrong house."
So the Policemen invades the wrong house and the reasoning of the man in charge goes like this: opps, blimmen heck we got the wrong house, well we better tell the residents, and it should be official, but I don't have any Manchester Police Dpmt headed paper - or a pen, should I write it in marmite on the benchtop? I know! I'll use the fridge magnets...