You are right that the prices are extreamely competative and from customers comments you can see the service is good - I can vouch for that being one of those customers myself!
As I have not been to Durham for a while, or searched out the offices I cannot really comment on this, although I am sure someone from eUKhost will be along shortly to answer any of these concerns that you have! They are very helpful!
As far as support is concerned I have always talked to someone from the eUKhost team. And, again as far as I understand, Mark and Rock are both employees of eUKhost.
With regards to the English, English is my first language but I have problems getting everything right sometimes when I am typing fast - and I'm not an English degree graduate either
Sorry that I could not answer most of your questions but they are quite complicated!
Like I said I am sure someone from eUKhost will be along shortly to answer your questions!