A statement from Sutton police:
“Residents, we have received calls recently about a “workman” knocking on doors in Burdon Lane, Cheam, advising residents that there is a sewage leak in order to gain access to their properties. We have spoken to Thames Sewage who advised that there is no such leak. Please be aware and share with family/neighbours to make them aware.
For details of such warnings and other items go to Sutton Police