[Gremlin]

I have a book about the history of Ribble buses upto 1966 and there is no mention of the Rishton and Antley buses.

I drove for Standerwick for a while in 1966, they were part of Ribble and ran the first double deck coaches on the motorways. The coaches were called Gay Hostess's and did the Blackpool or Burnley to London service with a lady hostess serving tea and butties.
a
I hope you find more information on the Rishton and Antley buses.