Range from the cheapest Fix a leak £160 (PLUMBING CO (THE) based in SG4) to the dearest Fix a leak £400 (B P S Gas Services based in SG6).
Comparing plumbers estimates for Fix 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 for fixing a leak in your home by posting your job to plumbers in Letchworth.