In the 1950s, a tram Glasgow purchased some years before, a 'one-off', unidirectional double decker car which it numbered 1005 and which was sometimes known as the 'Blue Devil' for its unconventional three tone blue colour scheme, was put forward by the LIght Railway Transport League as an option for trails that the League hoped might happen in London.
http://rogerfarnworth.com/2023/07/08...amcar-no-1005/