Systems Administrator needed

I am the IT manager for a UK company selling China and Crystal tableware. My company website ([login to view URL]) is hosted on a 1and1 dedicated (Linux) server which I configured and manage myself. But I only have a very basic knowledge of dedicated servers and although I managed to set it up and install my website, I don’t really know what I am doing. The website has been running smoothly for about two years so I have not bothered to upgrade my server but I encountered a problem last week when my website started running really slowly and the technical support department at 1and1 told me that they could not offer support to fix the problem as it was software related. After spending many hours I eventually fixed the problem myself by upgrading the operating system from Plesk 8.1 to version 9. I am concerned about future problems that may occur on my server and with my lack of knowledge, not being able to fix. Therefore I am looking for a freelance systems administrator to carry out routine maintenance and upgrades to my server and also offer advanced technical support on a consultancy basis when required. Also dealing with website/server backup procedures and contingency plans for server outages and hardware failures. Preferably based in the UK but not essential if you are contactable 24/7 by email or phone.