Britain's response to fifteen French capital ships

How would Britain respond if France built fifteen capital ships before the First World War?

Britain would not need to change its building program. Stronger French forces would help contain Italy and Germany and improve France's case for a larger treaty allowance.

Britain would have little reason to match the proposed French program. France and Russia would be recovering naval standing lost to Germany, while closer Anglo-French relations reduced the threat posed by French strength. Completed Normandie- and Lyon-class ships would also make it harder for Italy to challenge the Mediterranean balance. France could then press for a larger Washington treaty allowance, perhaps parity with Japan.