How Britain might answer a German mining strategy

What if Germany had emphasized mines rather than torpedoes before World War II?

Britain would build more minelayers and minesweepers, but the expanded mine threat would still be difficult to organize against and clear.

Britain would be expected to begin the war with more minelayers and minesweepers if Germany visibly emphasized mine warfare. The Royal Navy would take some satisfaction from seeing its forecast confirmed. That preparation would not make the campaign easy, because organizing and clearing a much larger mine threat would remain a major operational burden. Anticipating the threat would not guarantee enough capacity to neutralize it quickly.