Range from the cheapest unblocking of a clogged toilet £60 (G&H Gas and Heating based in SE6) to the dearest unblocking of a clogged toilet £180 (Dulwich Plumber based in SE13).
Comparing plumbers estimates for a blocked toilet 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 unblock a toilet in SE4 by posting a job with HaMuch and we will send it to plumbers in SE4.

"Unblock a clogged toilet, bowl almost full. Ideally today or tomorrow service."
SE4