Which web hosts would you recommend for hosting Invision? Ideally I'd like one based in the UK. Am currently with Surpass and using Vbulletin but am looking to move over to IPS and would be very happy to leave Surpass behind in the process!

I'm afraid we are only able to recommend our own hosting (Community in the Cloud) here.   If you would like unbiased hosting recommendations, I recommend posting somewhere like webhostingtalk.com