Range from the cheapest Downlights installation £270 (D Jones Electrical based in KT18) to the dearest Downlights installation £490 (R I B Electrical Installations Limited based in KT19).
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 Leatherhead.