Range from the cheapest Fit a new plug socket £88 (BEALS T/A Brown Electrical & Lighting Se based in SE23) to the dearest Fit a new plug socket £180 (Mal Electrics based in SE15).
Comparing electricians estimates for a Fit a new plug socket 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 by posting your job to fit a plug socket to electricians in SE14.