Mills says the announcement of his sacking from the BBC had led "to the publication of rumour and speculation".
It comes as UK-US relations have been strained by the PM's refusal to be dragged further into the Iran war.
Police are carrying out inquiries into Lord Mandelson and Andrew Mountbatten-Windsor's links to sex offender Jeffrey Epstein.
A man in his 20s suffers potentially life-changing injuries in a shooting in Bristol.
The online listing portal is now being pursued in a class action, launched on behalf of potentially hundreds of estate agents.