So integrated that I have simply swallowed them without notice.
washing up = doing the dishes
washing up liquid - dishwashing soap
kitchen roll= paper towels
cling film = saran wrap
loo = toilet
in a tick = in a mo, in a minute, shortly
postman = mailman
Bob's your uncle = there you are
fancy = like , as in "I fancy a coffee, do you?" Or "she does not fancy him."