Trouble is, it will be cheaper to give the claimant a few £k than to fight this nonsense and see it all off once and for all.
Nobody is looking at the bigger, industry wide, picture that says resist all the way to the Supreme Court and get some senior court authority on the subject.
Each individual claim is under £10k including all the costs. It's cheaper to settle than punt half a million on having chosen the wrong 'test case'.