Surprised no-one has brought up the sole right-hand drive Hispano Habit-bodied Volvo B7L (
BX03 OVZ) yet. It was new as a demostrator, seeing use with First Glasgow and First York in 2005-06, before passing to Arriva Midlands (as their 3615) and latterly McGill's of Greenock (as 228 & latterly 2228 after the Arriva Scotland West acquisition was completed), being one of three B7Ls they operated and ironically enough, the last to be withdrawn.
There was a vid of it getting shunted around what appeared to be a scrappers yard after withdrawal that briefly did the rounds a while back; afterwards I heard McGill's themselves had set it aside for preservation. Given that nothing has come of the latter point at the time of writing, one can come to one of only two conclusions - it was eventually scrapped or it's sitting at the back of Johnstone depot (it's last operational base) waiting it's turn.