The consultation, whenever that happens, will drag on for who knows how long and they'll realise it's way too complicated and costly to administer for just a handful of passengers per typical flight (around 2.5 pasengers for European business aviation).
Can't see operators/aircraft owners being asked to cough up each month their APD dues like the airlines for well over a year yet - the government will find it near impossible to work out who to send the bills to for starters - all those 'offshore' owners on foreign registers with about three or four ownership layers between the titled owner and the actual owner.
Ever tried sending a bill to an aircraft owner on the P4 register?!
Good luck george, you won't be invited back on that yacht anymore.