Range from the cheapest installation of motion sensor PIR security lights £63 (Sam electrical based in Nw1) to the dearest installation of outside security lights £113 (Responsible Electricians based in N7).
Comparing fire & security specialists estimates for security light installation gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to install PIR motion sensor lights in King's Cross by posting a job with HaMuch and we will send it to fire & security specialists in King's Cross.