Theresa May is to appear alongside her husband Philip in what will be his first broadcast appearance.
The Prime Minister's husband, 59, has kept a low profile since Mrs May won the keys to 10 Downing Street last year.
And although he has attended some dinners and events alongside his wife, he has continued his own career in finance in London.
But on Tuesday he is to be thrust into the limelight, appearing alongside the Prime Minister on the BBC's The One Show.
A Conservative source was quoted by The Times as saying an appearance on the prime-time programme was "the holy grail" for politicians.
It comes as the BBC was reported to have reached an agreement for a Question Time-style format for Mrs May and Labour leader Jeremy Corbyn to be quizzed by members of the public.
In an appearance on Radio 4's Desert Island Discs in 2014, the Prime Minister said Philip, to whom she has been married for 36 years, was her "rock" when her parents died when she was 25.
