January 2017 and Theresa May delivers her now infamous Lancaster House speech. But how was it decided what it would say and where it would be said?

Mark Mardell dissects whether the speech backed the Prime Minister into a corner by setting out her red lines, or if it was merely the start of the long negotiating process.

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It took the Government nine months to trigger Article 50 after the British public voted to leave the European Union. At the time, some said it was overdue. Since, people have said it was too soon. Running alongside that debate, though, was whether it could even be triggered at all.

Mark Mardell unpicks the attempt to trigger Article 50 without a vote in Parliament and the ensuing court case, how a business woman was thrust into the limelight and felt she became “an avatar of hate” and whether the timing was wrong all along.

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After Theresa May became Prime Minister, one of the first jobs was to set out her vision for implementing Brexit. Integral to doing that were her Chiefs of Staff – Nick Timothy and Fiona Hill.

Mark Mardell considers how Mrs May positioned herself as the person to deliver Brexit, the influence her chiefs had at the time, and - as she approached her first party conference that Autumn – what her speeches said about how negotiations would progress.

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In June 2016, Theresa May put herself forward to be the new Prime Minister, the person who would navigate the UK's exit from the European Union. Her campaign, however, was to be short lived and she moved into Number 10 just a few weeks later.

What did she think about the EU? Mark Mardell delves into what she said to friends and colleagues, the role she played in the Referendum campaign itself and what this tells us about her approach to the subsequent negotiations.

Oh, and what does "Brexit means Brexit" really mean?

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In 1973, there were celebrations when Britain joined the European Community. But there were always those against the UK being part of the project. Over the next 45 years, there were debates and clashes, headlines and speeches; everyone speaking just as passionately about membership, regardless of which side they were on.

In Brexit: A Love Story? Mark Mardell has talked to the people who were there at those key moments, trawled through the BBC's archives to hear what was said at the time, and painted a picture of how things have changed over time. Was the end, Britain voting to leave the European Union, an inevitability?

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When the Conservatives won the 2015 election, David Cameron reiterated his manifesto promise to hold an in-out referendum on Britain's membership of the EU. Not long after, the starting gun was fired and the battle lines drawn.

What followed? It's a well charted path; but Mark Mardell talks to the people who were there at the key moments, to see what they think the defining factors are, and whether they think things could - should - have been done differently.

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How much can one man do?

During his first speech as Conservative Party leader, David Cameron insisted the party needed to stop "banging on about Europe". So how did he come to promise an in-out referendum 7 years later?

Mark Mardell charts the rise of UKIP and Nigel Farage, and asks what impact this had on Cameron, the Conservatives and the country.

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The European Union started with just 6 member countries. Over the years 6 more - including the United Kingdom - joined the community. But it was in 2004 when the single largest expansion saw 10 more countries join in one go. And with membership came freedom of movement.

Mark Mardell looks at what impact this had on Britain's relationship with the EU and whether enough consideration was given to the number of people who would come to live and work in the UK?

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In 1997, Tony Blair swept to power with New Labour and Britain won the Eurovision song contest with Katrina and the Waves. Was there also a renewed enthusiasm for the European project?

Mark Mardell recalls the twists and turns of Labour's relationship with Brussels. Could the fresh-faced, charismatic new Prime Minister rekindle the romance? And if not, why not?

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A blustering billionaire playing politics, or a brave man doing his best for his country? Sir James Goldsmith divided opinion, but he united both sides of politics in promising a referendum on the euro.

Mark Mardell reflects on the party that only fought one election, didn't win a single seat, but secured a promise that in the end mattered more. And while that referendum never came to pass, he paved the way for the one that did, nineteen years after his death.

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