Range from the cheapest fitting of a smart camera doorbell £41 (Phase Electrics based in WR4) to the dearest fitting of a smart doorbell £131 (SBF Services based in WR3).
Comparing electricians estimates for fitting a smart Ring style doorbell 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 to fit a smart WiFi doorbell in WR4 by posting a job with HaMuch and we will send it to electricians in WR4.