air experience flights and trial lessons.
the club will sell you a trial lesson
No no no no no nooooo.
Repeat after me:
trial membership.
BGA clubs do not sell flights or lessons; that would require the same close attention from the regulator that ENAC is threatening.
The CAA has no objection to BGA clubs selling short period memberships (1 month?, 3 months?) which include one or more free flights.