I wanted to get a new laptop a short while ago and the thing that fit the bill was a Eurocom 1.0 Monster
http://web.eurocom.com/EC/ec_model_config1(1,228,0)
Its another one of those Clevo rebranded type laptops (w110 I think). An 11 inch laptop with an Nvidia 650GT 2GB. Seems pretty good for £562. I'd be tempted by the upgrades though, in particular the Matt screen for about £60. In terms of quality, Clevo laptops have an average record, but I personally haven't had any issues with them.
I think its a good option considering you have a normal desktop so portability is probably something to look out for. Battery life isn't as high as those ultrabooks you'll find but it puts in something like a solid 4-5 hours. Temperature, the normal concern for this kind of laptop seems ok- for its size and power it runs surprisingly cool under load and off load but that still means it'll get hot. Obviously read more reviews for more information.
One final thing- I likes the fact it doesn't look like your average gaming laptop. Little bit thick, yes, but it doesn't have huge flashing lights.