Range from the cheapest bath upgrade £350 (The London Electrical Compliance Company LLP based in W1B) to the dearest bath upgrade £500 (Toilets Taps & Traps ltd based in W1T).
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 WC1E by posting a job with HaMuch and we will send it to plumbers in WC1E.

"Replace a new bathtub, remove my current bathtub" - W1D
"Replace a bath" - EC1V