Range from the cheapest Downlights installation £270 (DMA Electrical Solutions ltd based in CR3) to the dearest Downlights installation £440 (Uptown Electrical Ltd based in CR6).
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 RH8.