Range from the cheapest Downlights installation £240 (Green Pulse Energy Ltd based in CO2) to the dearest Downlights installation £410 (Air Lec Solutions Ltd based in CO7).
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 Acton.