Theresa May will tell European leaders there are no plans for a second Brexit referendum during her first summit as Prime Minister.

Speaking in Brussels on Thursday, Mrs May will tell counterparts the "priority now has got to be looking to the future".

But over dinner, she will insist that Britain does not want to damage the European Union when it quits the bloc.

No 10 said there had been suggestions in Europe that Britain would revisit the June 23 referendum decision.

As a result, the PM will use the meetings to make it clear that it is "right and proper" that the result is "honoured".

"There has been a sense that there is still some debate in certain quarters of the European Union about whether that might be still a possibility and the Prime Minister has been absolutely clear many times that is not the case", a source said.

"But it is an opportunity for her to say that directly to all leaders precisely because we do need now to all be focusing on the future, which is the UK outside the European Union".

Mrs May will attempt to ease the jitters of other leaders who fear they will be harmed by Britain's exit from the bloc by vowing to deliver Britain's departure in the "best possible way".

"She wants the outcome at the end of this process to be a strong Britain as a partner of a strong European Union", the source said.

"There has been some debate and concern expressed within the remaining member states about what does this mean for the future of the rest of the European Union.

"The Prime Minister will make clear she doesn't want the process of the UK leaving to be damaging for the rest of the European Union, that we want our departure to be a smooth, constructive, orderly process minimising uncertainty for countries, for people and our businesses and that we want to build a future partnership that cements Britain as a close, broad and deep partner for the EU".

The PM will also "reassure" other leaders that Britain will be a responsible EU member while it remains in the bloc.