Range from the cheapest Downlights installation £290 (ACDC Electricians Ltd / Dfrench LTD based in DA16) to the dearest Downlights installation £410 (Capitol Maintenance Limited based in DA17).
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 Woolwich.