Well, it is so difficult to recommend these days - you can get unlucky with anyone. There was a real horror story in this month's PC Zone regarding Cyberpower.
Other options:
www.Wired2Fire.co.uk/
http://www.vadim.co.uk/
My current gaming PC is a Mesh one
http://www.meshcomputers.com/
Other options:
www.Wired2Fire.co.uk/
http://www.vadim.co.uk/
My current gaming PC is a Mesh one
http://www.meshcomputers.com/