4501s restoration has gone to a very advanced stage now. The owner kindly texted me on 10th June to say that the engine has had a partial rebuild, but the problem is still there, more diagnostics I presume, the floor on which we were in the process of re boarding has now been completed, many of the skirt panels plus the front and rear ends have been repainted into Arriva blue plus the wheels. All of the seats downstairs are now in the same moquette and a ticket machine base has been fitted. Advert boards have been fitted and the yellow body stripe reinstated.
It is to appear at a rally very soon too, it currently has no MOT so it can't take passengers but when I have details, I will give them to the group.

Happy news at last.