Previously I wrote very positive review of WHUK.
By the time I discovered that there are some weakness point that they should cover. They have excellent 24/7 customer support and very instant response time. The problem is they cannot prevent the issues from happening again. So you have to monitor your site 24/7 to avoid server side issues. Another weakness point is they have to redesign their package to follow up the world growing market. I hope they solve those issues.