I knew my membership was up sometime in May but on checking found apparently I was due to renew yesterday!
As I haven't received any renewal invite, I followed the instructions from my invite message last year, assumed the increased fee of £15 (and added a small donation) and have just paid via Paypal using friends and family.

Thank you very much Ali. Much appreciated that you are on the ball

Thanks Ali. We don’t always process payments and membership-related stuff straight away, it's often when we have a group of several "members" needing attention that we then process all at the same time...