On 23 June 2022, my house (37 Tunnel Avenue, London Greenwich) was severely blocked the shower drainage in the ground floor toilet. I phoned Thames Water emergency services 08003169800 to report this problem around 14:00pm. I got a very quick response from Thames Water which sends one engineer with engineering van at 15:30pm to this house. The engineer opened the underground sewage drainage cover outside of the house, it filled with sewage inside. He used the mechanical drive equipment in the engineering van to drain the sewage totally out within an hour and half hours. We greatly appreciate Thames Water’s quick response and wonderful job (This case number is: 00177731).