Edinburgh Transport was owned for a time by Stevensons of Uttoxeter, which later became a subsidiary of British Bus who of course sold out to Arriva, that is probably were the confusion is coming from.I don't recall Arriva ever running in Edinburgh or the Lothians. I vaguely remember Arriva attempting to buy Lothian and being turned down. Lothian's main competitors were Eastern Scottish/SMT/First (name changed in 1990 due to staff buyout, and again in late 1990s due to takeover)