"A load of old cobblers" and variants such as "what a load of cobblers" or just "cobblers!" is British slang for "what nonsense" that is derived from the Cockney rhyming slang for "balls" (testicles) of "cobbler's awls".

What does cobbler mean in England?

cobblers in British English

(ˈkɒbləz ) British slang. plural noun. 1. rubbish; nonsense. a load of old cobblers.

What does a cobbler mean for a living?

A cobbler is a person whose job is to make or mend shoes. ... These guys talk an awful load of old cobblers.