Range from the cheapest Downlights installation £230 (Mere UK Ltd based in WA9) to the dearest Downlights installation £450 (CRG Plumbing & Electrical based in WA5).
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 War.