Range from the cheapest Downlights installation £230 (Tom finn based in M19) to the dearest Downlights installation £690 (Adaptation Building Services Ltd based in SK4).
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 Stockport.