Range from the cheapest Fit a new plug socket £106 (E S Electrical based in N11) to the dearest Fit a new plug socket £210 (Excelelectricial based in N22).
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 N11.