Here is a London Transport 1:24 scale Routemaster Bus from Sunstar I bought many years ago. It even has the AEC AV590 9.6 litre inline six diesel under the "hood". I also installed a miniature hubodometer on the rear wheel for extra realism, not that it needed it.
Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!