The CAMM cells at the front and in the centre line near the funnel (48 in total) are dedicated CAMM launch cells - and they're carried through from the Type 23 - CAMM uses a soft launch profile via a gas generator. The reasoning behind that is to provide local area defence for the ship and any vessels it's escorting in it's immediate vicinity.so if each cell can hold 4 missiles.. that means 192 ceptor missiles abit obsessive.
they should have made them more adaptable so longer range anti air missiles could also be carried.
They could have selected A50 silos to take Aster but that'd have meant they were heavier, more expensive and less flexible in terms of positioning them. Take a look at the Seawolf firing gallery on the Type 23 and see if you can find the depth and the margins to put A50 into there - I specify A50 because those are the shortest cells that can take Aster.
I honestly think the type 23 > Type 26 feed through "future legacy" idea is one of the smartest things the RN has come up - it's a large chunk of cost management to get Type 26 into service on budget, on time.