Range from the cheapest Downlights installation £270 (Richard P Electrical Contractor based in BR2) to the dearest Downlights installation £590 (A Bankside Sevenoaks Electrician based in TN13).
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 TN16.