Where an enormous interwar submarine fleet might serve

Without the First World War, where would the Royal Navy deploy very large numbers of L-, H-, and E-class submarines?

Their construction and deployment would depend on strategic demand and supportable stations; the nominal class totals alone do not establish a workable fleet.

Raw hull numbers are only the beginning of the problem. Strategic stations, support demands, and likely construction choices would determine whether a very large British submarine force made operational sense after a different First World War outcome.