Green’s Dictionary of Slang

Westminster abbey n.

a cabbie.

1998		R. Puxley Fresh Rabbit.
2002		K. Lucas ‘All my life I’ve wanted to be a Barrow Boy’ in Obfuscation News Apr. Issue 20 🌐 By the way, said Maurice, have you a Bottle of Sauce to pull the Smash and Grab. I presume you are going to be a Westminster Abbey with all your knowledge of the Joe Brown?