The angled flight deck and catapult would still be in use but if that gets fouled you have only one chance to recover theBuccaneer or Gannet on the wire.
The CdG has a similar issue, permanently. Once again, having AEW on board (even clunky Gannets that are no E3 by any mean, ok) is well worth the risk.
Keep the ski jump for Harrier and stick with that lone catapult for Gannets. No need for Phantoms or Sea vixens if SHARs with AIM-9L plus Gannet.
Buccaneer are still very tempting, to boost the carrier strike capability; but that ski-jump / catapult interference could be dangerous for heavy and fast jets like them.
Plus the RAF can send his own Harriers for more strike power.
A difficult choice, really !
I would say one Bucc = two Harrier mk.3 as far as firepower goes. Maybe strictly limit Bucc number to 4 or 5, even a few of them add a lot of firepower compared to a Harrier. Plus night strike, all weather, ARM...
In the end probably better to keep that precious catapult for three Gannets AEW and nothing more. They are no fast jets, they can loiter waiting for the Harriers to clear their catapult / landing area, they are few and cause little interference with the ski-jump.