(UK) Can anyone suggest a good Gaming Laptop around £1200?

All my searching led to this Laptop: http://www.cyberpowersystem.co.uk/system/Vector-II-15-VR-400-Gaming-Laptop

This seems to be the cheapest option, and I have had a good experience with the prebuilt tower I got from them (4 years loyal service!).

Any help is welcome. The reason I'm buying a laptop is that I can't travel through London feasibly with my current tower and my Lenovo Yoga 510 shits it's pants at anything more advance than MS Paint!