I've used HAH for seven years, as a colocation server client. I have two Hewlett Packard servers with them, provided by my business, so I use them primarily for hosting, as compared to shared services. Up until around 6 months ago I would say very close to 100 percent up-time. They had a few infrastructure issues, which they were very honest about, due to failed equipment which they have since invested in and replaced, and no issues since. I have dealt with other data centres previously, in and around London. I opted for a business more local, I'm based in Chesterfield. IT support staff are easily accessible within office hours, and are super friendly and really try to help you. Out of hours incurs a reasonable fee, which is completely understandable. Would totally recommend them.