[springs branch mickey]

Originally Posted by Dave Rowland

I remember reading that drivers referred to 31's as 'toffee apples' because of the shape of a control lever in the cab. 31/0's were called 'skinheads', probably due to of the lack of roof mounted destination/code panels which the other 31's were fitted with.

Thanks for that. It,s the only explanation I've heard that makes sense.