Do not shout that you’re pissed! If you’re angry, say YOU ARE ANGRY! Pissed means your drunk, not frustrated. Weird stares will ensue if you shout that you’re pissed (particularly on the tube on a Saturday night).
Chips = french fries and Crisps= chips.
Biscuits = cookies.
Filter coffee= black coffee (which does exist here!)
Circus= circle (so don’t expect any clowns)