Also has some bright spark in the RN looked around at what everyone else was building and had the wisdom to fit even a deck level hanger for a modest 6-8 helicopters on the Albion and Bulwark we wouldn't need a replacement for HMS Ocean. It was I guess just about acceptable in1990 not to have that vision, when Ocean built, but to repeat the mistake in 2002 is mad.
The reason why Albion and Bulwark do not have hangers is that they were designed to carry landing craft, Royal Marines, armour et al and supporting equipment required for a beach landing, meaning both vessels would be required to enter a littoral environment, which carries a substantially higher level of risk. The LHP (OCEAN) was designed to remain much further out to sea with the designated Invincible class carrier hosting CAP/CAS assets. Helo's would then turn and burn or enter a flight pattern allowing for a coordinated assault with the landing craft without the vessel having to enter a potentially hostile environment close to shore subject to fire from land artillery / mortars etc.
A hybrid Albion hosting a dogs breakfast of landing craft and helo's was never part of the UK's amphibious ambitions. By adding a hanger (six Junglies) you would suck up space needed for supporting assets required to fly, man, fuel and service the airframes, which otherwise would be taken up by the resident Commando and supporting engineers, tankies etc. There is absolutely zero advantage of bringing such helo assets close to shore in the first wave. Those countries that did add hangers (Dutch) had little choice because they have no other maritime assets capable of hosting and supporting a large rotary support wing.
You can't simply pluck vessels out of a country's inventary and criticise there design without understanding the bigger picture relating to how they would be used in a conflict and how they would dovetail with other maritime assets. You may want to consider signing-up for the following which covers how LHP/D's should be used in a modern context.
IQPC Amphibious Operations 2011
UK Amphib landings would typically take the following phased approach:
Phase One: SBS undertake covert beach recce's and set-up covert OP's
Phase Two: CAP/CAS provide top-cover (Harrier, Apache and in the future F35C) for the overt landing phase
Phase Three: MCM, Albion & Bulwark support primary 3 Commando landing party to secure beach head supported by Junglies carrying RM assault parties dropping in the rear blocking access routes to the beach
Phase Four: Bays bring in Armoured Infantry Units and supporting equipment to back-up Commando unit once the beach head is secure
Whilst all this is going on Invincible/Ocean would remain outside the landing box protected by FFG's / DDG's .In future this will be a single QE Class acting as a joint LHP/Strike Carrier hosting F35C/Wildcat/Merlin/Apache.