[Dickyboy]

Originally Posted by G-CPTN

Almost certainly an OB, though if it was new it could have been an SB.

OB had a pointed nose, SB had a rounded front.

http://wakefieldfiles.co.uk/Bedford-ob.htm

http://wakefieldfiles.co.uk/bedford-ob-lists.htm

http://www.bedfordob.com/

http://en.wikipedia.org/wiki/Bedford_OB

http://wakefieldfiles.co.uk/bedford-sb.htm

http://wakefieldfiles.co.uk/bedford-sb-list.htm

http://en.wikipedia.org/wiki/Bedford_SB

The "Shotters" busses I recall were either OB or OWBs. There's a very good photo of one in "Southern Vectis" livery, though I don't recall Southern Vectis running them.
I lived in a village called Brighstone. and both Shotters and Southern Vectis ran the same route through the village, and my parents always used the Shotters busses. Probably because it was the local (Very local) bus company based in Brighstone.
Shotters had two garages, one in Brighstone, and also another smaller one in Gunville, which was just to lay busses up overnight, I assume.
Shotters was a single route operation, which finally failed, though their coaches continued for some time after that. The coaches mainly operated tours around the IOW, and at one time ran a service up to London.