Chub
Phwat
A "ton" is Cockney rhyming slang for a hundred pounds.
In London slang, 250 pounds is often referred to as a "pony." This term comes from the early 19th-century British slang for money, where a pony was equal to 25 pounds. Over time, the term has evolved to represent 250 pounds specifically in London street slang.
50 quid.
Twenty grand.
monkey
Extra Terrestrial or E.T for short is the name for an Alien, that is not from this planet.
Five hundred pounds
3 Bills www.Urbandictionary.com
20 quid.
30 pounds
I can't find any cockney slang called "gorilla" but a monkey is 500 pounds.