Theresa May has told her senior ministers they have a responsibility to make Brexit work as she prepares to hold the first meeting of her Cabinet.
The new Prime Minister said the Government had a duty to deliver success for all the UK - "not just the privileged few" - as the country adjusts to its new place in the world.
Mrs May will also hold her first National Security Council session, discussing the global threats facing the UK and Britons overseas.
Speaking ahead of Cabinet, the Prime Minister, who backed a Remain vote in the referendum, said that her administration would not be "defined by Brexit" but would create a country able to take advantage of the opportunities presented by leaving the European Union.
She said: "Brexit means Brexit - and we're going to make a success of it.
"It will be the responsibility of everyone sitting around the Cabinet table to make Brexit work for Britain.
"And it will also be their duty to deliver success on behalf of everyone in the UK, not just the privileged few. That is why social justice will be at the heart of my Government.
"So, we will not allow the country to be defined by Brexit; but instead build the education, skills and social mobility to allow everyone to prosper from the opportunities of leaving the EU."