Nightmare. And scary as hell. And when it's not "official" c/d cards, its the shop points or the we're-not-a-bank-honest-guv quasi-debit-cards; it's impossible to catch a bus in London now without a tracking device^W^Woyster card.
Luckily for me I've only returned to this decadent backwater for a brief period before I head back to the glorious freedom (for once not a sarcasm in sight) of the ex-USSR. I feel disgusted that I had to write that.
Edit: And I think I'd like to add that despite the pain, I don't plan on getting any kind of card and may end up regaining a bank account but only as another means of converting my bitcoin to whatever the locals call cash.
Edit 2: And another thing. I tried to book a driving test in the UK. Wasn't able to do it online, even to book and pay later, without using a (non-government) bank account and (foreign) clearing house. Apparently a postal method is available. Our governments themselves are starting to require banks and credit/debit in order to interact with them.