You Wot

Trying to find out who said this on some British show:

"You Wot"

It is a variant on 'you what?' and simply indicates that a previous speaker has not been heard or understood. It is in very common informal use in the UK and could have been said by anyone; though it would be more usual to hear it from the less well-educated characters.

DFG

From the less educated classes! "You wot" is a personal challenge.
If you say something that is either unwelcome or rude you are challenged to say it again 'YOU WOT?!"
My understanding has always been that this will lead to an argument if the original speakers repeats his orignal phrase usualy with vhemance as a result of the original challenge.

It can also be used in a derisory mannor.
If something is said that is considered to be foolish when given as an instruction or order to a group of people who do not wish to be so instructed or ordered. It will be chanted.