Look on ebay for Oxtar Sports TCS Goretex.
Like these ones
http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=190150119478
The good thing about them is they are CE approved as safety equipment for professional motorcyclists, which is something boots costing 4 times the price aren't, plus they are leather, not cheap and nasty Lorica. I love mine, had them a month or so and done about 1000 miles in them, and they're proper comfy and waterproof, like every review said they would be.