Dead side, live side, overhead join, good grief! Every airfield in the UK must be so pleased to have its own unique arrangement! Far be it from Brits to follow the KISS principle......like they do in the US of A. Where they call unicom, prefaced by the NAME of the airfield to avoid misunderstanding. And left turn circuits are de riguer, unless otherwise specified in the literature....
So in the US, you call on the universal frequency, eg. " Enstone traffic, Echo Romeo joining downwind for Two Five. " And you then slot in downwind. Simples.
As the UK likes to be different in every way, I am more than ever reluctant to welcome power traffic to a gliding site, where THERE IS NO DEAD SIDE, FOLKS....gliders can come from any direction as necessity requires. and furthermore, THERE IS NO OVERHEAD JOIN! ! As we have seen some power planes attempt, despite the winch which has just launched a glider up to 1,400 feet and is still connected with a braided steel cable which might just possibly get in the way of an overhead join.......
And yet, on a gliding site, if the thermals all quit at once, as does sometimes happen, you can have eight or ten gliders landing at the SAME TIME and they mostly manage to avoid each other.