The Royal Navy still has submarines, does it not?
Although you are correct, the UK presently has but one “in service” air craft carrier. I do believe you are incorrect however, concerning it having “no aircraft”.
https://www.youtube.com/watch?v=_eE_ahJlvtI
Routine peacetime deployment of twelve F-35Bs, but a typical warload will be 24 F-35Bs and some helicopters.