A common battlecruiser hull could also support fast carriers

Would the Royal Navy standardize a common hull for both battlecruisers and aircraft carriers?

It plausibly could: the adaptable hull supports both roles, and common machinery would improve fleet standardization.

The proposed battlecruiser hull is judged large, capable, and adaptable enough to provide a common basis for both roles, with similarities to early Ark Royal studies. Removing belt armour and heavy guns from the carrier version would free weight and permit higher speed. Common hull and machinery choices would also simplify operating and supporting the force together.