From comments on PPRuNe seems clubs in the UK aren't very 'club-like'. Don't they have...
monthly flying competitions including a trophy for most points etc
navigation competitions,
annual or semi annual comps. with other local clubs
Those three above tie in well with a hangar BBQ/party
organised fly-aways: You have the WHOLE of Europe to explore!
organised flying nights (give people a 'taster' and hire a movie & projector + booze postlight),
excursions as a group to do things that are difficult to organise individually (eg fire training, submersion training, altitude training, ATC visits etc etc etc...)