Range from the cheapest Downlights installation £318 (Kilo Electrical Ltd based in Bs48) to the dearest Downlights installation £340 (D H Installations based in BS49).
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 Somer.