Welcome to the forum, what area of electrical are you familiar with... I hate to dampen your dreams a little but the housing market has been stale for a few years now and well established Electrical firms are struggling to make ends meet at the moment, im not in any way saying dont bother but im just giving you a 'heads up' as to what to expect, im not sure where you stand with your qualifications compared to ours and maybe another member can help you there!... if you do decide to take the risk i wish you good luck!
Do a bit of research and you'll find britain is now in a double dip recession and with the loom of the failing euro its not looking like there is any light at the end of what is already a long tunnel.