It's not quite what you're asking, but I've just a purchased a Boardman cx comp, for commuting, day rides and winter riding. With discount, it cost £550. I plan to buy some lighter road wheels and tyres, making it a 'do all' bike.
It has single front and dual rear eyelets, masses of tyre clearance, and so far I can't fault it. Yes, it's lower end running gear (sora, square taper cranks etc), but I'll replace with higher spec as they wear out. I think with a bit of internet searching, I'll still end up with a cracking bike and spare wheels for around £800.