I don't know where you are in Hampshire, but if you can get an off-peak train up to Waterloo, sax.co.uk isn't far by foot or taxi.I'm looking to try a Sop to quench my curiosity and probably instigate a terrible bout of GAS. Unfortunately, there aren't any well stocked music shops with a wide variety of instruments available in my area.
I called one store in Southampton and they had quite a poor range of sops, but I just wanted to try one to see how I got on. The guy I spoke with on the phone was all well and good but he joked that if he couldn't sell me a sop he'd sell me an Alto instead. Kind of put me off going in as even if the guy was kidding around, I don't want to be sold anything! Sax.co.uk were really relaxed when I visited there, but it's a long way to travel. I think Dawkes is the closest decent shop to me, but that's an hour and af half away.