British response to four Scharnhorst-class ships

How would Britain respond if Germany began the war with four Scharnhorst-class capital ships?

Britain would preserve the pace of King George V and carrier construction, might complete the Lion class, and could begin escort expansion earlier.

Four Scharnhorsts would create a raider threat too large to meet through the historical balance of programs. The Lion-class battleships might be completed, while work on King George V-class ships and carriers would be less readily slowed in favor of escorts. Escort construction could still begin earlier, but the Royal Navy would need to maintain heavy units capable of hunting paired German deployments. The ships would probably still be sunk eventually, though at greater cost and with more demanding British force allocations.