Range from the cheapest leak detection £75 (Marian Plamada based in NW1) to the dearest leak detection £270 (LUCO - London Utility Company based in W1W).
Comparing plumbers estimates for finding a leak 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 detect a leak in WC1V by posting a job with HaMuch and we will send it to plumbers in WC1V.