The rest of the EU does not necessarily understand why the British public voted the way they did and are now worried about what it might entail for the future of Europe, Theresa May says.

But the UK's PM says Brexit will not lead to a "wider unravelling" of the European project and insists that she would not support that.

However, she says the UK is a unique country with a unique history and political culture, in which she says - rather amusingly - that there is not a strong tradition of coalition government.

The UK may have come to be seen as an "awkward" member but that this was in part a response to the inflexibility and rigidity of the EU.

David Cameron's renegotiation was "one last valiant attempt" to reform the EU from within but it failed, she argues.

The UK's culture is "profoundly internationalist" and the referendum vote was not an instruction to "turn inwards" or retreat, Mrs May says.

The PM dismisses talk of insularity, saying most Britons have family from all over the world and people "instinctively" want to travel, study and do business across the globe. 

The Leave vote was not a "moment Britain chose to step back from the world but to build a truly global Britain". 

The PM says that she wants the UK to be "fairer, more secure, united and outward looking" as a result of Brexit.

There is the first mention of a Global Britain, with the UK remaining a "good friend and neighbour" to the EU but "reaching out" beyond its borders to other continents. 

Theresa May walks to the podium and after a brief moment of applause her speech begins. She starts by saying the British public voted for change six months ago, with their "eyes open". They voted for a "brighter future", not just to leave the EU but to embrace a wider world. 

Theresa May has arrived at Lancaster House. And here is the view from inside the room as journalists await.

Norman Smith
Assistant political editor

BBC News Channel

The BBC's assistant political editor Norman Smith says people expecting a blueprint for Brexit or a "feast of details" are likely to be disappointed.

While he expects the PM to confirm the UK is leaving the single market, he says the speech will focus on the "big picture" - reassuring the EU and the rest of the world about her intentions while avoiding the "nitty-gritty".

The PM, he adds, "rarely says more than she has to" while the reality is that there is still an ongoing debate in government about the kind of deal on trade and immigration - encompassing future participation in a customs union or potential quotas for EU citizens - which will be central to the negotiations.

In conclusion, he believes the speech will be fascinating but we are unlikely to be "massively wiser" by the end of it. 

Select Committee
Parliament

The Director of Research and Economics at the British Chambers of Commerce, Mike Spicer, responds to a question about a "sectoral" approach to Brexit negotiations.

He says that the BCC have no "objection in principle" to this, but warns that this cannot be to the detriment of the UK economy as a whole and that it must work for the broadest swathe of industries in that sector.

Mr Spicer says that his discussions with members of his organisation show a "complex picture" with different industries and manufactures who all have specific requirements.

A good deal with the EU would reflect this, he says.

Image source, CIA

There has been a lot of focus on the phrase Global Britain, given that Mrs May is expected to pepper her speech with references to it. But it has been pointed out that this is not a new thing.

The prime minister began her conference Brexit speech in October with a claim that the UK voted for a Global Britain - a country which "looked beyond our continent and to opportunities in the wider world".

David Cameron was a fan of Britain winning the so-called "global race" while the word global also cropped up a lot in Gordon Brown's lexicon as well.

In his 2009 conference speech, he reflected on the UK's decisive role in the responding to the banking crisis, saying it had chosen "internationalism over isolation" and helped settle a "global deal".

Select Committee
Parliament

The Head of Exports for the Agriculture and Horticulture Development Board, Peter Hardwick, tells MPs that his is already a highly-regulated sector and says that the industry would want to review these regulations, which might bring the UK into conflict with the EU. 

Mr Hardwick says that the UK already does "a poor job globally" in getting rid of tariff barriers, using the example of trade conditions with China on food exports that have to comply entirely with Chinese food law. 

He says that he has worked internationally in the food industry and says that if you want to trade with the EU, you will be required to meet EU rules. 

Speaking about how much the industry will change from the current arrangements following Brexit, he says that "ultimately the level of divergence will be limited by the practicalities" of trading with the EU. 

On the issue of tariffs and other export costs, Mr Hardwick says that these already exist and that many countries still impose tariffs and bans on British beef because of "spurious" BSE rules.  

Responding to a question on food security, he says that liberalising trade could be damaging to domestic production, but could make access to food better - and says it depends what is meant by food security. 

Every MP has had a book about Brexit delivered to them following a crowdfunding campaign.

Image source, PA

Theresa May is taking a "reckless gamble" by "yanking" the UK out of the single market, Green Party of England and Wales co-leader Caroline Lucas says.

Not only will British business lose access to a market of 500 million consumers, she claims, but key environmental and social protections will be put at risk.

Ministers have been filing out of this morning's Cabinet meeting, in which they will have been briefed on the prime minister's speech. If any of them says anything noteworthy, we will let you know.

The Daily Politics

Tuesday's Daily Politics is starting earlier than advertised to take the PM's Europe speech live and in full, expected to start around 11:45 GMT.

Presenter Jo Coburn will hear from Conservative Theresa Villiers and Labour's Barry Gardiner ahead of the speech, and will later get reaction from across the political divide.

The programme is live from 11:30 to 13:00. If you are away from the TV, there is a link to watch it at the top of this page, where you'll have the advantage of being able to pause and rewind to those key moments.

Lancaster House, the location for Theresa May's Brexit speech, has played host to some important moments in British political history over the years.

The 19th Century mansion in central London, used by the Foreign Office, is where British prime minister have traditionally hosted foreign leaders, made major speeches and held high-level summits.

It was where, in the 1980s, Margaret Thatcher extolled the virtues of a single internal market across Europe which would see barriers come down and opportunities for enterprise to flourish.

A few years earlier, it was the scene for a seminal conference on the future of Rhodesia which paved the way for agreement on an independent constitution for what was to become Zimbabwe. The Lancaster House talks, were attended by Robert Mugabe and a host of African leaders.

Here are a few images to stir some memories. 

Image source, PA

Image source, PA

Image source, PA

Image source, PA

Sooner or later, the downward pressure on the pound since the UK's Brexit vote is expected to lead to upward pressure on the prices of most things we buy.