Qualifications for a freelance IT/Network Techician?
Afternoon chaps,
I would like to know what, if anything, are the minimum required qualifications to work as a freelance IT/Network technician. I have worked in such a role for a year before moving to my current job in Flight Ops doing everything from basic system repairs and upgrades to administering a 300-computer network, and prior to that I have had 5 years experience of working on computer systems and basic networks. I am now looking at doing freelance work in the evenings and weekends to help fund my flying habit 
So, do I need a qualification such as the CompTIA A+ and N+, MCSE etc or is my experience enough on its own?
Cheers,
Ox