Range from the cheapest Downlights installation £230 (BMC property maintenance based in NP23) to the dearest Downlights installation £350 (Rockfield Smart Homes Limited based in NP26).
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 NP15.