Maybe I should clarify....
My first flight was a gift from my family via a third party "Experiences" company, for which I have to book in advance using a voucher.
From what I saw/overheard during my visit today, the "flying list" system is used for club members, and I believe I'll have to use during the first three months after my first flight (as I'll have temporary membership during this time), and if I chose to become a member after that...
Very friendly bunch, certainly seemed to be plenty of opportunity to get stuck in and help out!