Would an unexpected battleship change Britain's building programme?

After receiving Subjugator, would the Royal Navy build more of that design or continue with the Lions?

Probably the Lions, or simply more King George V ships already close to entering service.

Receiving the hypothetical Subjugator would not necessarily lead Britain to build copies. The expected follow-on choice is the Lion class or the King George V class. The latter is favoured as a practical possibility because those ships were already approaching service in the scenario's period.