Are there no British manufacturers? I suppose with the small profit margins there isn't much call for it, but it's a shame that there is no British equivalent of Dell/Lenovo/HP etc. I suppose they all use components manufactured by others anyway, so if I want British I might as well buy from OCUK.
I used to work for a company who provided all of the PC's for a lot of University's across the country, we even provided one of the server clusters for St.Andrews Uni, that and we provided kit for various Police stations and constabulary's and councils etc.
Sadly the company got brought out and merged with another company based in the UK, who are still running as far as I am aware.