I think it says it all when companies 'sell' on the feature that their support is 'UK based'.
When I signed someone up with a 'Uk based ISP' with the thought that the 'UK based support would be a bonus', they were in the process of moving their support to Bulgaria!
That said, they do seem to answer the phone pretty quickly (emails slightly less so), are easy to understand and do seem to have the answers.
The only issue is when using (English?) idioms. ;-) [1]
Cheers, T i m
[1] At one point I was discussing the built-in Samsung S7 email app and referred to the app as the 'built in jobby' (because I wasn't sure exactly what it was called and I'd said 'email app' enough times) and the support guy suggested he would install 'Jobby' himself and give it a try. Not unreasonable I guess. ;-)