TONY Blair is confident Britain will get back on its feet and be a "serious country again" after Brexit.

The former Labour Prime Minister said he was determined to be part of the debate as he passionately believes Brexit is mistake.

Speaking at the Global Education and Skills Forum in Dubai, Mr Blair stressed now was not the time for him to comment on whether Theresa May should resign.

Asked if the Prime Minister would not last to the end of the week as leader of the UK, he replied: "I have done the job of being prime minister and I know how difficult it is. Frankly, she doesn't need me making it any more difficult in this particular moment in time."

He added: "The one thing I do say to everyone though is that my country is going through a really difficult period, that's for sure, but don't write us off.

"It has been a big mess, we are in a lot of trouble, it has evoked a national crisis.

"But I absolutely promise you one way or another - I obviously have very strong views about Brexit - but whatever happens on Brexit, one way or another Britain will get back on its feet again, will be a serious country again. We will sort ourselves out."

Mr Blair said Britain was in "a moment of real crisis" and if a leader was struggling to get the support of those around, it became "very challenging, very difficult, if not impossible".

He was questioned on whether he was grateful to have a degree of separation from UK politics in the current climate.

The former PM said it was when things were really bad that you wanted to be involved.

"It's an odd thing about politics; I would say the journey of politics is you start at your least capable and most popular, and you end at your least popular and most capable.

"And partly what happens over time is you do learn a lot from the process of being in Government."

Asked whether he thought Mrs May was now at her "least popular and most capable", the former premier replied: "I am not sure about that one."

Mr Blair further explained that while he was no longer on the front line, sometimes even after a leader left, it was important to use what was learned in government to inform the debate.

"This is why on the Brexit thing, even though I am not on the front line any more, I believe so passionately it is a mistake for my country, that I feel absolutely determined to be part of it," he added.