Range from the cheapest Downlights installation £357 (Flash Electricals based in SE7) to the dearest Downlights installation £390 (A A A based in SE7).
Comparing electricians estimates for Downlights 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 for installing downlights by posting a job to electricians in Charlton.