Range from the cheapest Downlights installation £290 (Morris Electrical Services based in GL17) to the dearest Downlights installation £331 (MG Electrical Services based in HR9).
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 HR9.