I would also consider joining BSAC as you're in the UK. I used to have a very prejudiced view of BSAC in that you had to dive cold murky quarries - so I took the PADI route. However as age and wisdom took over I realised the benefits of BSAC. Mainly the club aspect where you get to socialise with other divers and there is a lot to be said for the experience and knowledge you can gain from them too.
I'll admit to have been lazy in my training - in that upto recently I'd just halted at AoW and got dives in. Now being part of a BSAC club and of course being part of the forum I am working jointly on both my Rescue and my Dive leader, they both have some differing characteristics - BSAC you learn EAN and Decompression diving as part of the standard modules where as Padi it seems has a more thorough rescue element.
Training is good and further training to be encouraged, but I'm sure most will agree its hours underwater that make you a more comfortable diver. With each dive your experience will grow, in big leaps at first and then more gradual later on. It is amazing how your perception of diving changes after 30 dives, then 50, then 100 etc etc The more differing dive environments you can experience the better you will be. Everyone enjoys different things I for instance used to hate current - now I relish it, I've dived to +50 being Deco qualified - its okay I'd rather for the most part be a 10 - 30 where all the sea life is, I don't get excited by wrecks or macro life - others love what I dislike and dislike what I love and thats what makes the scuba community great. Once you start you have no idea where you'll end up and what floats your boat at the start may not after a number of dives.
My advice, join a club get more dives, meet new people and have fun