Series 2A up until they got strangled by the US DOT used Lucas L488 single filament clear marker and L594 single filament clear turn signal with amber bulb. Both the L488 and the L594 glass lenses are available (reproduction) from several vendors. You can buy reproduction complete lamp assemblies or component parts including the metal bulb holder, the rubber boot, the lenses, and the chrome ring.
In the rear there were the Lucas L691 and 692 the L691 is generally amber as it is single filament used for turn, and the L692 is usually red for stop and tail as it is dual filament. You can still get them as they were used on gazillions of Britcars from the sixties...Lotus, AC, and many more.
Hope that helps.