Boris Bikes phone number, account

Instead of 0845 026 3630 you can dial (020) 8216 6666 for Barclays Cycle Hire (in London).

Also, don't get caught out like I did. My hire key was linked to an expired credit card. This didn't show up when the card expired, but on my first attempted use of a bike after that. Luckily the BCH people dealt with the issue swiftly, and I wasn't in a hurry, but I think I will diarize the expiry of my current credit card to remind me.