What could follow Vanguard in a battleship-building Britain

Could Britain have built more Vanguards or a successor battleship after the Second World War?

Yes; possibilities include improved 15-inch ships or 16-inch designs that shared ammunition arrangements with the United States.

Several outcomes are plausible if Britain continued building battleships after the war. Options include further development of 15-inch armament or a 16-inch design with ammunition commonality with the United States. Common ammunition could reduce the logistical burden of sustaining allied capital ships. The choice remains contingent on wider strategic and industrial circumstances rather than pointing to one inevitable successor.