The simplest way to reduce British warship costs

What is the cheapest single change that would improve British naval procurement?

Maintain continuous shipbuilding so yards retain their workforce, facilities, and production knowledge between classes.

Britain could improve naval procurement by keeping shipyards in continuous production. Steady orders preserve skilled teams and let each hull benefit from experience gained on the last. Feast-and-famine programs force yards to dismiss workers, close facilities, and rebuild knowledge for the next class. Those interruptions increase both cost and schedule risk. A consistent build rhythm is therefore more valuable than a short burst of ships followed by another gap.