Range from the cheapest Boiler service £50 (Property Technical Services based in ML10) to the dearest Boiler service £140 (Aitken Plumbing and Heating Ltd based in ML5).
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 ML2