British Prime Minister Theresa May meets with Scotland's First Minister Nicola Sturgeon | Andrew Milligan - WPA Pool/Getty Images Theresa May delays Brexit until ‘UK approach’ agreed with Scotland British prime minister travels to Edinburgh, says she won’t be rushed into triggering Article 50.

New British Prime Minister Theresa May used a visit to Edinburgh Friday to reassure Scottish voters that she will not trigger Article 50 until a “U.K. approach” has been agreed.

May used her first official visit since taking office Wednesday to meet with Scottish First Minister Nicola Sturgeon.

Emerging from the meeting, May said she would not begin the formal process of leaving the European Union until a plan had been put together and vowed to involve Edinburgh administration in the process.

The remarks are likely to spark anger in Brussels, Paris and Berlin, amid growing frustration at the U.K. for stalling on Brexit. They will also raise eyebrows among Tory backbenchers who want the process to begin as soon as possible.

In his first phone call with May after she became prime minister Wednesday, French President François Hollande urged her to trigger Article 50 as soon as possible.

But speaking shortly after meeting Sturgeon in Edinburgh Friday, May said: “I have already said that I won't be triggering Article 50 until I think that we have a U.K. approach and objectives for negotiations. I think it is important that we establish that before we trigger Article 50.”

May’s decision to travel to Scotland on her first official visit as prime minister is an acknowledgement of the threat of a second independence referendum. In the wake of the Brexit vote last month Sturgeon warned that a fresh poll might be the only way to secure Scotland’s continued membership of the EU.

In a bid to reassure Scottish voters, who overwhelmingly backed EU membership, May insisted the Scottish National Party-led government will be involved in the Brexit talks. She said: “I'm willing to listen to options and I've been very clear with the first minister today that I want the Scottish government to be fully engaged in our discussion.”

Earlier, she said her visit to Scotland demonstrated her commitment to "preserving this special union that has endured for centuries."

“And I want to say something else to the people of Scotland too: the government I lead will always be on your side. Every decision we take, every policy we take forward, we will stand up for you and your family — not the rich, the mighty or the powerful."

“That's because I believe in a union, not just between the nations of the United Kingdom, but between all of our citizens.”

Before the meeting Sturgeon said the onus was on the U.K. government to prove it can “protect and defend Scotland's interests,” She said: “I am determined to find the best ways of protecting Scotland's interests and I'm prepared to work to see if we can find options within the U.K. context and the U.K. process that will now take place to do that."

“I've been very open that it may well be that if we want to protect those interests the best or the only option will be to consider whether we want to become an independent country. That's a decision that Scotland would have to take if we get there, but I'm open to examining all options.”