What A&C said was...
time that this practice was stopped when flyind in a circuit with traffic that has not been fully briefed to expect such manoeuvers
With which I agree. I occasionally fly a run and break, usually during practice for the DA I still haven't got - and on an airfield with no other traffic and those on the ground know what I'm up to. I've nearly been wiped out landing a non-radio microlight (quite legally) on an airfield where a Yak started one having ascertained from the AFIS operator (who couldn't see the threshold) that there was nothing known on finals...
There is a time and place.
G