If one wishes to hear a risible phoney Scots accent tune into the !"Kist of Riches" site and listen to the recordings of one Ewan MacColl/Jimmy Millar made in the early 50s.
These may pass mustard South of Hadrians Wall and in the wider world as examples of someone speaking and singing in the Scots language, in the land they seek to portray all they cause is a laugh or a quiet smile from those with ears to hear.