Well done Lizzie ......
Seems to be an AEC Reliance with Duple 'Britannia' centre-door 41-seat (usually) body.
Has the same 30' chassis frame as the one that I previously restored/owned, but with the earlier AH470 engine, which featured 'wet' cylinder liners. These engines often suffered badly with head gasket failures and overheating problems.
The radiator was usually the root cause of all this though.
Did yours have air or vacuum brakes?
Was it a former Chiltern Queens coach? (Judging by the livery).
This one definately had 56 seats as I had to count them at the time!

Yes SM, it had air brakes, with a cute little metal flag that had to go down before it could be driven 8-) 8-)
Yes again, it was bought direct from Chiltern Queens for £500 with a full tank of fuel, good tyres, and some spares

.
I drove it for about 3,000 miles in all, but my then husband went to drive it one bitterly cold morning and found the clutch had frozen away from the flywheel! Tried to start it again after first turning the ignition off, and it wouldn't start!
A member of the coaches owning railway society, that we were members of and had contributed to a share of the £500 purchase price, who was an ex-army tank mechanic tried to fix it.
That failed, and in the end I had to use my retail contacts with a coach company we did business with, and organise for them to tow it back to the railway using one of their HGV recovery vehicles!

Ahhhhhhhhhh! What lovely memories!!

:-*8-) 8-) 8-) 8-) 8-)