Of the players I've seen Tom McAllister would have become one of the greats but for Rodney Marsh. Eddie Colquhoun got capped for Scotland in an age of fine Scottish centre-backs. So they would take it for me playing-wise but the Scot with the biggest influence at BDTBL would have to be John Harris.
But then again nobody has mentioned Don Peattie and Duggie Brown![]()
On a pedantic point of information, Peattie was born in England (though his family movced to Scotland when he was a child).