Range from the cheapest Downlights installation £266 (Joe Lavenia Electrical Services based in WR5) to the dearest Downlights installation £470 (Elliott's Property Renovations & Garden Landscaping based in WR14).
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 WR4.