Range from the cheapest installing or fixing of light switches £40 (Hoover Tamayo Solotrader based in SW9) to the dearest installing or fixing of lightswitches £160 (OFF ELECTRICAL SERVICES AND MAINTENANCE LTD based in SW9).
Comparing electricians estimates for installing or fixing light switches 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 repair or replace light switches in SW4 by posting a job with HaMuch and we will send it to electricians in SW4.

"Replace a light switch"
SW4
" Hi, I am based in Southwest London in a small residence. I’d like to have three dimmer switches installed in my flat. Please could you let me know how long that usually takes and provide a quote? Please could you also let me know of anything you require to complete this job? Many thanks, ..."
SW11