The Cabinet Office has apologised after the home and office addresses of thousands of people receiving New Years Honours were published 'in error'.
It has emerged that the personal addresses were accidentally published on a Government website.
Celebrities, government employees and politicians are thought to have been included in the security breach.
Prominent public figures including musician Elton John, cricketer Ben Stokes, NHS England’s chief executive Simon Stevens, television cook Nadiya Hussain and politician Iain Duncan Smith were among those whose home addresses were published, the Guardian has reported.
A spokesman for the Cabinet Office said: "A version of the New Year Honours 2020 list was published in error which contained recipients' addresses.
"The information was removed as soon as possible.
"We apologise to all those affected and are looking into how this happened.
"We have reported the matter to the ICO (Information Commissioner's Office) and are contacting all those affected directly."
More about the New Year's Honours list:
A mum who lost her son and husband only five days apart is one of dozens of people from Wales to be recognised in the list.
Charity founder Rhian Mannings joins the likes of taekwondo Olympic gold medalist Jade Jones and holocaust refugee Renate Collins to be honoured in Wales at the turn of the decade.
