More prewar sloops would multiply escort capacity

What would a better Royal Navy budget have prioritised before 1939?

A larger rolling programme of sloops and escorts would have improved early-war convoy and anti-submarine capacity.

Regular production of modest but useful escort vessels could reshape the opening of a war. Launching roughly two flotillas each year from 1930 would give the Royal Navy a trained and numerous escort force before the emergency began. The notional ships combine long-range economical propulsion with a turbine boost for higher speed and dual-purpose guns, while omitting torpedoes to keep them focused on escort work. The argument is institutional as much as technical because hulls already in service affect convoy protection, anti-submarine operations, and base security immediately.