From http://www.hmics.org/about-us/who-we-are
"Derek Penman QPM
Derek was was appointed Her Majesty’s Inspector of Constabulary in Scotland in January 2014. This is independent appointment under Royal Warrant and confers wide ranging powers to look into the “state, effectiveness and efficiency” of both Police Scotland and the Scottish Police Authority."
"Derek completed the Strategic Command Course in February 2008 and in June of the same year was appointed Assistant Chief Constable, Crime and Specialist Operations, with Grampian Police. He led on the force priorities of national security, serious organised crime, public protection and road casualty reduction. His portfolio also included energy and protective security for the North Sea and Royalty protection."
"He was awarded the Queens Police Medal (QPM) in the 2014 Queens Birthday Honours.
Derek is also a Member of the Institute of Directors and is the Honorary Colonel of Angus and Dundee Battalion of the Army Cadet Force."
Institute of Directors? I didn't realise the police were a business...
Anyway, his bio doesn't say whether he is a keen motorist, but given that most Scots are, that's a fairly safe bet. We don't have to be in CID to deduce that this chap is politically somewhere on the right, perhaps rather further to the right than an "impartial" inspector ought to be.