Range from the cheapest Downlights installation £310 (Inspired Electrical Contractors Ltd based in GU11) to the dearest Downlights installation £390 (Vacuum Doctor based in GU12).
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 GU12.