Thanks, jigjag. The clue was done very hurriedly this morning - there was one little piece of spam and I wanted that bumped down the page. It seems to have been a successful, timely, non-contentious clue! I don't think I've done date/days clues before.
I have never watched 'Line Of Duty', but I am very well acquainted with the west of Scotland pronunciation (and possibly spelling) of 'definitely'.