Have you looked at Felt?
I had a similar criteria to you. I just bought a Felt Z95 back in September:
At the time there was a 90% assembled version which came quicker and it was about £365.
I'm absolutely loving this bike and it's been really solid. I've had a broken chain and I've had to add some grease to the bottom bracket but I'm really enjoying the bike and have been commuting daily on it. A few people have mentioned comfort being an issue on this bike - you are leaning forward more than on others but I've had no issues with the saddle. This bike has pretty good reviews which is what made my mind up. I know people say less-than-great things about Sora groupsets but, once adjusted correctly these have performed very well for me.
Re: Wheels - where I ride there are a lot of potholes and I've also used it in the dark on some pretty rough cycle paths and they've held up well. I looked briefly at a triban before going for the Felt.
http://www.merlincycles.com/felt-f95-road-bike-2014-72321.html
Good luck in your decision, I think you'll love whichever you get! Let us know.....