Hi, I am London based system administrator with more than 10 years of experience, and I will be really happy to work for you.
If you consider my offer or have any other questions please contact me via freelancer chat, so we can talk about your requirements, and define precisely what need to be done. After that, I may propose a final price and time needed to solve your problem.
If this is an urgent problem I can start working on it even now.
kind regards
Michal.