Another slide taken at Blackwaterfoot, Arran, is of 141HDH, a Commer with Duple body. Badge says "Corinthian" on radiator. Was with Central, Walsall new(?) in 1960. Restriction on PSV width on Arran was, I think, to do with the narrow roads, and having experienced a white knuckle ride on a packed Stagecoach Western Volvo B10M from Lochranza to Brodick in 2012, I wonder if the restriction should have been kept in place!
Photo taken 1968, Blackwaterfoot, Arran