Having just come off a cruise ship I wondered if the Spams realised that the name of the pub on board fitted nicely with Cockney rhyming slang. I just could not stop thinking after mentioning the name of the Dog and Duck.
Back on the Jug and Bottle, that is also rhyming slang as the pub is on an old airfield dispersal and has photos of the Lancs and crews that were there at the time.