bienvenue à la maison de fous, as a Frenchman might say Mark.
It was probably yourself who I met, up at Emley, yesterday. You had a few shots with my TM1000?
Anyways, as suggested, depending on budget, an Air Arms S400 would be a great starting rifle (see the one KTM is selling in the Sale & Wanted section).
If you want to be a little more extravagant, I think I mentioned I have 2 Steyr LG110's for sale (both in GinB stocks) which I'd be more than happy to let you test drive for a week, if you were interested.
These are great rifles that not only shoot well, but are very easy to learn how to tune/maintain yourself. One of them has also just been fitted with a brand spanking new action, direct from Steyr.
Whatever you do, don't rush into anything, you'll certainly never find yourself up at Emley, stood around with nothing to shoot.
RAW TM1000 [.177] || S&B PMII 12-50x56 (That's right... just one rifle!)