Range from the cheapest Downlights installation £359 (Twyford Electrical Ltd based in RG10) to the dearest Downlights installation £360 (FMJ Solutions Ltd based in RG10).
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 Twyford.