Outsourcing giant Serco has apologised after it accidentally shared almost 300 email addresses of new recruits to the Government's coronavirus contact-tracing programme.
The company is helping to sign up people to support efforts to track and trace cases of Covid-19 to help reduce the spread of the disease in the UK.
The Government has promised to recruit 18,000 contact tracers to manually gather information about the places infected people have visited and other individuals they have been in contact with to get a detailed picture of who might be at risk of infection.
The error at Serco saw 296 addresses being included in a CC (carbon copy) section of an email rather than BCC (blind carbon copy), meaning they were visible to recipients.