Range from the cheapest Fit a new plug socket £110 (A&E - Electrical based in HP14) to the dearest Fit a new plug socket £230 (Multi Fuel Heating and Plumbing based in RG6).
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 Henley-on-thames.