Range from the cheapest bath upgrade £170 (Paul Russell based in SS1) to the dearest bath upgrade £500 (City build.com based in Ss5).
Comparing plumbers estimates for bath replacement 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 replace a bath in SS4 by posting a job with HaMuch and we will send it to plumbers in SS4.