she has turned to the occasional cigarette in recent weeks after giving up for years.
“Sam has been so stressed by it all that she has taken up smoking,” one said.
“She doesn’t really smoke, but the stress has driven her to cigarettes. She wants to give up after the referendum.”
She looked devastated on Friday morning as she watched her defeated husband David announce he would be gone by the autumn after losing his fight to Britain in the European Union.
Sobbing Samantha was on the sidelines as a rock of support for the PM who admitted “this ship needs a new captain” following a vote for Brexit by millions of people across the UK.
After Cameron choked up as he finished his statement, he grabbed his wife's hand as the pair disappeared through the door of Number 10.
Speaking in Downing Street he told the assembled media: The British people have voted to leave the European Union and their will must be respected.
"The country requires fresh leadership to take it in this direction."
He added: "I will do everything I can as Prime Minister to steady the ship over the coming weeks and months, but I do not think it would be right for me to try to be the captain that steers our country to its next destination.
"This is not a decision I've taken lightly but I do believe it's in the national interest to have a period of stability and then the new leadership required."