What if Britain built two battlecruisers per battleship class?

How would the scenario change if Britain built two battlecruisers for every battleship class from Lion onward?

It would chiefly add another Queen Mary and another Tiger. The extra Queen Mary could reinforce the Mediterranean while the additional Tiger approached service.

The proposed ratio adds two ships to the force considered here. Two Lion-class ships already exist, while the later programmes would supply another Queen Mary and another Tiger. The extra Queen Mary could provide an alternative Mediterranean reinforcement, with another Tiger following into service. These additions expand the available choices without fundamentally changing the scenario.