Range from the cheapest Fit a new plug socket £90 (Ashton Air Ltd based in BS3) to the dearest Fit a new plug socket £240 (JPS Electrical Services based in BS13).
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 BS1.