For .com domains and UK content and target audience its essential that you get UK hosting.
Re capping throught some old posts, the above comment is not true from a SEO point of view.
I mainly have co.uk domains but hosting on US servers because of price.
The main site ive been plugging lately a .ORG.UK is ranked 2 in google for a reasonable search string "uk domain drop"
Ive always not bothered with SEO holding my luck to the gods. But from this example it does seem hosting location might not be looked at any longer?
Either that or ive totally missed the point of SEO again lol