Range from the cheapest Fit a new plug socket £96 (Barry Chadwick Electrical Contractor based in ST17) to the dearest Fit a new plug socket £112 (Abode Automation based in ST20).
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 ST15.