Clook have been our main hosting provider for over a decade, and host hundreds of sites for us. They have consistently provided exceptional support and have never disappointed us. Over this time, I've dealt with countless other hosting providers (Namesco, Eackspace, 1&1, Fasthosts, UKhosts, Cloudways to name but a few) all of which have disappointed and generally have support staff who know less about Unix than me. Clook on the other hand are always one step ahead of me and I can always trust their advice. They're pretty well summed up by this xkcd: https://xkcd.com/806/ except that you don't need to know the codeword! Clook are big enough to provide a solid, reliable 24/7 service, but small enough to provide us with the personal service we need. I couldn't recommended them more highly.