What a September 1940 war could have changed for British shipbuilding

What additional ships might the Royal Navy have had if war began around September 1940?

Illustrious and Formidable would have been available in this estimate, with further carriers and potentially all five King George V-class battleships following. Lion and Temeraire could have been launched and advancing toward completion.

In this counterfactual, Illustrious and Formidable would have commissioned by September 1940, with Victorious also plausible and Indomitable possible. Their differing historical completion dates are used to compare the effects of wartime interruption. King George V and Prince of Wales would probably have completed earlier, while earlier launches could have allowed the remaining three ships of the class to enter service during 1940. The possibility extends to all five King George V-class battleships, rather than a firm prediction for each ship. Lion and Temeraire, laid down in June and July 1939, could have been launched in 1940 and progressed toward completion. The argument depends on British industry maintaining construction momentum without the pauses and disruption brought by war.