Range from the cheapest Boiler service £46 (May Electrical based in S20) to the dearest Boiler service £136 (Heating Engineer based in S44).
Comparing heating engineers estimates for a Boiler service 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 a boiler service by posting your job to heating engineers in S80