Britain's Prime Minister Theresa May delivers a speech on leaving the European Union at Lancaster House in London

Theresa May has delivered her much-anticipated speech on Brexit. Here are the latest updates and reaction:

She told those gathered at Lancaster House that she did not want an outcome which left the UK “half-in, half-out” of the European Union. Extracts released by Downing Street in advance of the much-awaited address are likely to fuel speculation that the Prime Minister is ready to take Britain out of the European single market and customs union, though it remained unclear whether she will give a definitive answer on the question.

Downing Street had said Ms May would set out 12 negotiating priorities for the upcoming EU withdrawal talks, driven by the principles of certainty and clarity and the aims to make Britain stronger, fairer and “truly global”.

Ms May said: “I want this United Kingdom to emerge from this period of change stronger, fairer, more united and more outward-looking than ever before.

“I want us to be a secure, prosperous, tolerant country - a magnet for international talent and a home to the pioneers and innovators who will shape the world ahead.

“I want us to be a truly Global Britain - the best friend and neighbour to our European partners, but a country that reaches beyond the borders of Europe too.

“A country that gets out into the world to build relationships with old friends and new allies alike.