Navaleye is bang on - CAD/CAM is actually the source of much of the problems with Astute (and LPDR for that matter). CAD monkeys who know how to build ships are few and far between - BAE ended up hiring a load of general engineering / architectural draughtsmen who didn't know how to design ships, apply naval or marine standards etc. Lots of slippage and costly rework (and LPD was a simple ship).
CVF is also a simple ship and that is the reason for disquiet on lack of progress. There are one (possibly two) systems with any significant technical risk in the vessel, both of which have risk reduction programmes in place. In the meantime, capability is being taken out of the vessel because the estimate (NOT costing) looks too expensive. A bit more detail design would give better costing and would certainly help progress the ship.
WEBF is partly right however, no-one is in charge of the job. The SRO has a tiny budget and no authority to actually make thigs happen (IMHO).