Bicester Village is really a fashion outlet, so could be perfect for you.
I pass there pretty regularly (well twice a week!) and never fail to be disapointed every time I bother to stop. I went into the Musto shop just before Xmas and didn't see any waterproofs at all. Lots of fleeces and T-shirts etc but no rufty-tuffty, RIbnet float in the harbour in January, go to Weymouth in a Force 7, blat across the Solent in a small rubber dingy and an overpowered fibreglass motorcycle (I used to have one just joking) stuff at all.
Northface was out of everything I actually wanted. Henri Lloyd was a bit like Musto.
Still if Swindon are saying their boaty stuff is in Bicester (pretty much as far from the sea as you can get in the UK) then I might pop in for a look see.