Range from the cheapest Downlights installation £359 (ElcoFix LTD based in SE28) to the dearest Downlights installation £364 (Cummins Electrical Services based in DA18).
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 Abbey Wood.