Our attention now switches to Prime Minister's Questions. Theresa May gets a huge cheer from the Tory backbenches as she enters the Chamber.

The session will be getting under way in a few minutes time.

Labour leader Jeremy Corbyn has urged Theresa May to launch an inquiry into what he suggested was "improper interference" by Israel in Britan's political system.

It follows a recent row over comments by an Israel embassy aide, who said British ministers critical of the country's approach to the Middle East peace process should be "taken down".

The comments were thought to refer to Foreign Office minister Alan Duncan, who has criticised Israeli policy on settlement building. 

Mr Corbyn said the comments were an attempt "to undermine the integrity of our democracy" and could not be taken lightly.

Image source, Reuters

Mayor of London Sadiq Khan is to warn that a so-called "hard Brexit" - which would see the UK outside the single market and customs union - would be a "lose-lose" outcome.

In a speech to the World Economic Forum in Davos, he will say "privileged access" to the EU's internal market is critical for the capital.

The direction set out by Theresa May could put the UK's future prosperity and its place on the world stage "in peril", he will claim. 

Ellie Price
Daily and Sunday Politics reporter

When he became Speaker eight years ago, John Bercow said he would serve for nine years and as that deadline approaches, the bets are on in the race to replace him. 

Mr Bercow could just decide not to stand down next year, but I have been looking at possible replacements including Jacob Rees-Mogg, Chris Bryant, Lindsay Hoyle and Douglas Carswell.  

Labour MP Wes Streeting is accusing Theresa May of seeking to take the UK out of the EU "on a wing and a prayer".

He said the trade deals with the rest of the world that ministers imagined would materialise after Brexit would take time to negotiate and would not be as good for Britain as those it currently enjoys through EU membership. 

He also took issue with Mrs May's statement that a bad deal with the EU would be better than no deal, and her suggestion the UK would be willing to walk away if it did not get the outcome it wanted. 

BBC Newsnight

BBC Newsnight

Guy Verhofstadt is next up. The former Belgian PM and the Parliament's Brexit negotiator says he won't be talking about the issue now since there will be a separate debate on the subject this afternoon.

But he takes issue with Mr Kamall's hope that Brexit will be a "turning point" for the EU, suggesting that this has already happened.

Donald Trump's suggestion that other EU countries could follow the UK out of the door is unprecedented and the real wake-up call that the union needs, he says.

"It is now that we have to rescue Europe, not in 2019."

The MEP suggests some of his colleagues should be in Washington DC for Mr Trump's inauguration rather than Strasbourg - asking "why are you here?"

I can't see to whom those comments were addressed but I'd hazard a guess they were aimed at the UKIP delegation and Nigel Farage in particular.

Select Committee
Parliament

Conservative Maria Caulfield asks the panel appearing in front of the Brexit Committee what their opinion is of the argument that the UK should unilaterally confirm the rights of EU nationals in the UK before similar assurances are given to UK nationals in the EU. 

French resident Christopher Chantrey says he would like to see the UK government act first as it would be a "magnanimous gesture and a good way to open negotiations" - adding that the UK is leaving the EU and not the other way around. 

Spanish resident Sue Wilson agrees, saying that "something needs to be done with some urgency because people are suffering now" and that they cannot wait for two and a half years. 

She says she would prefer that the prime minister acted unilaterally now to confirm the rights of EU citizens to encourage other countries to reciprocate. She adds that she cannot see a reason why the other 27 countries would not reciprocate. 

Debbie Williams, who lives in Belgium, and Gareth Horsfal, who lives in Italy, agree that the UK should act unilaterally in this area.  

Conservative MEP Syed Kamall, the head of the ECR grouping in the Parliament, says there is the "illusion" of activity in the EU but the question must be asked whether their efforts are making Europe's citizens safer and more prosperous.

Focus on the big issues, he tells EU leaders, such as migration, the problems in the eurozone and Brexit.

He urges EU leaders not to get bogged down in the intricacies of Article 50 and so on but to focus on a constructive and mutually beneficial relationship between the UK and the EU - "a prosperous UK trading and co-operating with a prosperous EU".

Image source, European Parliament

As it turned out, Mr Juncker had nothing more to say about Brexit at this stage. 

As he sits down, he gets a round of applause.

He could still be prodded into saying more in response to interventions from leaders of the political groupings in the Parliament. 

Guy Verhofstadt and Nigel Farage will be among those speaking in the next half hour or so.

Image source, European Parliament

That opening reference to Brexit was rather terse. I expect that the European Commission president will return to the subject later. If he doesn't that will be interesting in and of itself.

At the moment, he is talking about the economic challenges facing the UK, in terms of job creation and investment and how social programmes are key to the European project. 

"We must not leave the weakest by the roadside as we progress," he insists.

House of Commons
Parliament

MPs start with questions to the Scottish Secretary, David Mundell, followed by the first PMQs since Theresa May's speech on Brexit. 

Conservative Paul Scully will then ask an urgent question on human rights in Burma, also known as Myanmar.

Next, Labour MP Joan Ryan will introduce her ten minute rule bill on the Promotion of Israeli-Palestinian Peace.

The rest of the afternoon will be taken up with a debate on Brexit, specifically the impact on security, law enforcement and criminal justice. 

OK, we were wrong on that. In French, Jean-Claude Juncker says he welcomes what Mrs May said but makes clear "a speech alone cannot trigger negotiations". 

The Brexit talks will be significant and he says he will do everything he can to ensure they progress "according to rules and will yield good results".

He goes on to to say that the EU must resist those who want to "close their doors" to migration and whose aim is to "deconstruct" the union.

You can watch his speech by clicking on the European Parliament video stream at the top of this page.

Jean-Claude Juncker is now speaking. If he follows his customary practice, he will speak in French while he is addressing wider matters relating to the EU but switch to English when addressing British concerns and Brexit, in particular. 

The Foreign Secretary, Boris Johnson says the plans for Brexit announced by the PM will benefit the UK and other countries around the world.

Image source, European Parliament

The Maltese premier says the EU 27, as they are known, are united at this moment and he is impressed by the preparations that their negotiator Michel Barnier is making for the upcoming Brexit negotiations.

He says there can be no negotiation before the UK triggers Article 50 and, after this happens, he expects to convene an emergency summit of EU leaders within five to six weeks.

As for the process ahead, he says negotiating a "clean, clear-cut" Brexit and a free trade agreement with the UK without compromising existing EU rules and institutions will be a "hard task".

But he says he and his colleagues must enter the talks with the aim of "safeguarding the EU project not punishing anybody". 

European Parliament
Strasbourg

Joseph Muscat says that it is an "historic irony" that Malta, an ex-British colony, will chair the EU presidency at the time when the UK activates Article 50. 

He says that remaining EU states are committed to striking a "fair deal" with the UK, but any final deal will "necessarily need to be inferior to membership". 

He adds that thinking otherwise would be a "detachment from reality".

He tells MEPs that there is "unequivocal unity" among EU states to preserve the indivisibility of the four freedoms of goods, services, capital and people.

The Maltese PM also adds that he would like to see the European Parliament be involved "as much as possible" in the Brexit talks once underway. 

A new surge in hate crime could be sparked by triggering the Article 50 process which formally begins Britain's exit from the EU, the Equality and Human Rights Commission has warned. 

The organisation's chairman, David Isaac, told the Commons Women and Equalities Select Committee he was "hugely concerned" the move would cause a backlash against EU citizens in the UK. 

In response, he said the watchdog was seeking to ensure there is "as much police protection and understanding in relation to hate crimes as possible".