Rebuilding the Royal Navy to Cold War size

If the budget and design were available, how long would it take the Royal Navy to reach a size similar to the end of the Cold War?

Using only British yards points toward the 2050s; foreign orders plus investment in British yards might bring the timeline into the late 2030s.

Fleet rebuilding depends on how quickly shipyards can expand production. With British construction alone, the estimate given is the 2050s for a return to roughly end-Cold-War fleet size. Foreign orders combined with investment in British yards could bring that forward to the late 2030s, while directing more expenditure outside the domestic economy. Major yards have unused or underused space, but bringing it into production would take years. Appledore is described as capable of more work, while A&P Falmouth is principally discussed as a refit yard. Smaller yacht builders could also produce short-range naval craft if offered worthwhile orders. Those craft could release larger vessels for more distant commitments.