Thanks Jeff. My first port of call was Apple, who told me that, in principle, my desired solution (i.e. specifically Apple Pay - Amex contactless tap to cash) is possible, but, in the case of the UK, I would have to check retailers, directly, as you have indicated. After checking 3 retailers, to no avail, I thought it may be worth checking on this platform, as there would be others who have experienced similar sets of circumstances. With regard to the US, according to https://simplefastloans.com, which I can't access from UK, beyond preview, Cash Back with Tap to Pay (2025) states the following: Walmart, Target, Safeway, Kroger, Shell, Exxon, BP, Chevron, McDonald's, Chipotle, Starbucks, Costco, Walgreens and Publix. However, I have not been able to confirm whether this applies to said retailers, which operate in the UK: although I am aware that many of these retailers have Apple Pay facilities, their UK arrangements are often quite different from their US structures, due to different business practices etc. I have contacted https://simplefastloans.co.uk, in order to find out whether they can assist with respect to UK relevant info, as well as some other resources, but have yet to receive replies.