Why a larger fleet needs sustained shipyard investment

Could a new government increase the size of the Royal Navy within five years?

Only to a limited extent; meaningful growth requires long-term investment in shipyard processes and a workforce that can be retained after training.

Announcing a higher budget does not create additional ships. British yards would need to redesign production processes, hire and train workers, and restore efficient capacity. A short surge would be especially expensive because the newly trained workforce would then be dismissed. Sustainable fleet growth requires an ongoing order book that lets industry maintain people, skills, and facilities rather than cycling through emergency expansion.