Range from the cheapest installation of a chimney liner £90 (Four Seasons based in NW6) to the dearest installation of a chimney liner £1200 (Borough Service based in W6).
Comparing heating engineers estimates for fitting a chimney liner 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 install a chimney liner in W11 by posting a job with HaMuch and we will send it to heating engineers in W11.