Whopity, agreed. Some ought to take a local area chart when circuit flying - they need to plan their downwind navex and rejoin!
I was once teaching circuits in RAF Bulldogs at a civilian airfield where we were flying two circuits for every one flown by some other SEP pilots. Some aircraft were flying downwind outside the ATZ. We certainly weren't going to follow them out that far so we flew inside their circuits. ATC were in full approval.