Range from the cheapest leak detection £75 (Vajda Levente based in HA5) to the dearest leak detection £255 (Simply Gas based in HA2).
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 HA2 by posting a job with HaMuch and we will send it to plumbers in HA2.