Though to be fair the reason we are maintaining numbers at about a dozen is we never achieved the planned force levels of every major defence review we have ever had. Be it the pre WWI 6 Fleet Units, each with an armoured cruiser, three light cruisers, three submarines', six destroyer's, a tender / depot ship and a number of additional hulls to cover refits; the post WWI two Fleet Units based around battlecruisers and supported by carriers, with additional cruiser squadrons, destroyer and submarine flotillas for coastal and trade defence; the post WWII pair of squadrons each with a carrier, two cruisers, six destroyers and a fleet tanker; the fifties plan for six destroyers, twelve frigates and two carriers; the 60s two ocean navy that needed three carriers and twenty three destroyers, light destroyers and destroyer escorts (frigates); other iterations from the 70s, 80s, 90s increasing skimmer numbers (ie, 10 FFGs), introducing fast attack craft, missile corvettes, multi role OCVs etc. none really went anywhere. So when everyone else was cutting back to the bone we were already there as we had made cut backs, delayed procurements etc. in anticipation of coming capabilities that never arrived.