Actually is not just Apple Pay but all contactless payments. It seems like the UK is just not set up to use them.
I've complained about New Zealand not having one hundred percent coverage of contactless payment machines, but there the problem is the few companies and businesses who haven't made the switch.
It appears the UK is a big step behind. Not only are there fewer PayWave capable machines but fewer people are using them.
Then there's the £30 usage cap for contactless cards. Apparently this precludes the use of PayWave at all. Something which has been extended to Apple Pay in shopkeepers minds.
Firstly, a £30+ payment should be possible supported by a PIN, and I don't believe the cap applies to Apple Pay anyway.
The tokenisation which underlies mobile payment methods is a good thing for security and UK smartphone users need to start paying stores to accept this form of payment by voting with their feet. Abandon a sale at the checkout if contactless payment isn't available to you.
Is the only way to effect a change which safeguards your financial security.