This past summer I spent a total of 5 weeks in the Republic of Ireland, Northern Ireland, Wales and a few hours at Heathrow enroute to Dublin and one night at a Heathrow hotel before my flight home.
I have credit cards from 2 different credit unions. Both have pins that I have never used because I use debit cards to get cash in Europe. However, compared to my last trip in 2019, cash was hardly needed this year. I only used the few € and £ I got for coin-operated laundromats, round-up tips and tips for housekeeping staff.
Both CCs are tap cards. Their tap limits are the same as their charging limits. I tapped my way across the Republic of Ireland in € and the UK in £. I only had to sign once and that was at my 1st hotel in Dublin because the bill was over the hotel's limit for charging an American card without a signature. They used the CC info I'd provided when I made the reservation, but I still had to sign.
I haven't graduated to using my phone to pay yet, but I found tapping to pay very convenient -- just like at home. As I mentioned on another thread, I was able to tap to pay at both small and large restaurants, at shops and grocery stores, in taxis, on local buses, for train tickets and at tourist sites.
Although some might say that tap and pay (or other forms of contactless paying) are too easy, my experience was that it made the whole trip much more enjoyable than having to sign for every purchase.