Theresa May will promise to confront “uncomfortable truths” exposed by a review into the way people from ethnic minorities are treated in Britain.

The prime minister said the audit, due to be published next week, would “hold a mirror up to society”.

Its findings include that white Britons are far more likely to have a job than black and ethnic minority people.

Meanwhile, Brexit Secretary David Davis and Foreign Secretary Boris Johnson are due to speak at the Tory conference.

‘Totally united’

Mr Johnson has been accused of undermining Mrs May and positioning himself for a leadership bid with his interventions on Brexit strategy.

Some Conservative MPs have called for him to be fired. Chancellor Philip Hammond said on Monday that he operates on the basis “everyone is sackable”.

But asked whether he would be “loyal” in his speech on Tuesday, the foreign secretary told Newsnight: “Contrary to some of the stuff that I notice has been knocking around in the media, you have a cabinet that is totally united behind every comma, every full stop, every syllable of the prime minister’s excellent Florence speech.

“That’s the agenda that we’re going to deliver and we’re going to deliver a great Brexit for this country.”