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.
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. emergency drain unblocking