Would the Maltas complete with angled flight decks?

Would completed Malta-class carriers receive angled decks only later in life?

That is one possibility, but the later ships might complete with angled decks if construction timing allowed.

The initial suggestion is completion to the original design followed by an angled-deck refit. The answer leaves open completion with an angled deck if construction overlaps the development work. Later ships in a slowly built class would be the stronger candidates, while earlier hulls could receive the change afterward.