A Sutton Council spokesman said: “Sutton Council was made aware of a potential data breach involving the inadvertent publication of the names of individuals in receipt of payments from the Council. No other personal information has been released.
“We immediately removed the data in question upon discovering this breach. As part of our agreed internal policies we are carrying out an investigation and are in contact with the Information Commissioner’s Office (ICO). We will of course do everything we can to help the ICO should they wish to make further enquiries.
“We are sorry this has happened and want to reassure residents we take matters such as these seriously. We are reviewing our processes to take all steps necessary to avoid any instance such as this happening again.”