Range from the cheapest Downlights installation £359 (David Baptiste based in Sm6) to the dearest Downlights installation £490 (Mattfuse Electrical based in SM6).
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 Wallington.