The risks facing Afghan interpreters is "exactly the same" as the problems facing troops fighting in Afghanistan, the great-grandson of Winston Churchill has told Daybreak.
Alexander Perkins, who has served in two tours of Afghanistan, will hand in a petition calling for more to be done to protect those who translated for the British army.
Signatures to the petition have leapt to 55,000 from 27,000 since this morning.
More top news
The pensioner, who is in her 70s, says her daughter has suffered from Huntington's disease.
US singer John Legend said he was "moved" by footage of the teenager singing one of his songs.
John Noakes was Blue Peter's longest-serving presenter.