Range from the cheapest Downlights installation £250 (ELECTROTEC MECHANICAL SERVICES based in TN28) to the dearest Downlights installation £350 (J saunders electrical based in TN23).
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 TN28.