However, for slow-draining sinks or a single blocked toilet, you’ll likely pay £200–300 for what a £10 plunger or £30 drain snake could fix. , and keep the number of a trusted local emergency plumber (not a national call center) saved in your phone.
Call an emergency service only when water is backing up, you smell sewage, or DIY has failed after 60 minutes. For everything else, wait for a standard appointment and save your money.