"We used to DREEEeeeam of 24 months..." (said in a monty python four yorkshire men kinda way).
Us fling-wing pilot johnny's have to do the proficiency check (LPC) EVERY 12 months whether we like it or not.
Did my £150's worth last week even though I'd flown 24 hours in the preceding 12 months....and I do recall signing a CAA form afterwards.