Moved my sites to freethought-internet.co.uk a few months back and they've been awesome. No downtime. Excellent customer support. There's been occasions on a weekeend evening I've contacted them for support related queries, and they've got back to me within 20 or so minutes, and that's on the weekend! The queries were relating to domain and account transfers to them, not anything wrong with their services.
I moved to them from phurix as the customer support was terrible. Taking days to reply. Issues with connections to e-mail servers. I wouldn't go back to them.