Range from the cheapest leak detection £90 (Mohammad Reza Mohammadi based in EN5) to the dearest leak detection £270 (Orbit Builders Service based in N12).
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 N20 by posting a job with HaMuch and we will send it to plumbers in N20.