Anyway, there's always the option of orbiting on downwind
Not in the UK, in no case is this an option available to the pilot.
If there is ATC then they might ask you to do an orbit, but you don't decide to do one off your own bat - that's ATC's option, not the pilot's. (Unless of course ATC offer you the choice of orbiting or extending downwind,
then it's the pilot's option.)
If there is no ATC then you can't do an orbit as you describe because this would involve illegal turns against the circuit direction.