Bollocks – (literally meaning testicles) nonsense

Bugger – a very useful term, which means to sodomize or someone who engages in sodomy (somehow I don’t see it gaining wide acceptance in the US). Can be used as an expletive like the F word, or combined, as the F word is, to form other useful expressions such as buggered (tired), bugger-all (nothing) and bugger-off.

Dodgy – not sound, good, or reliable

Fiddle – verb and adjective meaning to steal, usually from an employer. “Working a fiddle” means getting back at your boss (by stealing paperclips, fudging your timesheet or “throwing a sickie” – see below) for underpaying you.

Flash – an adjective describing a rich person who exhibits poor taste.

Flog – to aggressively sell something useless

Gaffer – boss

Git – a contemptible, mean-spirited, incompetent, stupid, annoying, or childish person

Kip – a short sleep

Legless – extremely drunk

Moggy – a mongrel cat

Nick – a versatile word that can be used as a verb meaning to steal or be arrested. Or as a noun referring to jail or prison.

Panel beater – someone who repairs auto bodies

Piss-up – an organized session of binge drinking (where you set out to get “pissed” or drunk)

Ponce – literal meaning is a pimp or effeminate person. “To ponce about” is to put on airs.

Posh – a pejorative describing rich people who show off

Scive – throw a sickie” (to take a day off when you’re not really sick)

Twit – a foolishly annoying person (an expression popularized by Monty Python’s “Upper Class Twit of the Year” sketch)