BBC Radio 4

Political correspondent Chris Mason rounds up some of the day's events in the referendum campaign with PM's Referendum Desk., external

As Labour seeks to grab the initiative in the EU referendum campaign amid fears many of their supporters are leaning towards voting Leave, here's an interesting insight from the Guardian's Patrick Wintour about what senior figures may say in the next few days.

Despite deleting its original tweet, Leave.EU has posted the same message again on its Twitter feed, along with another which declares an EU passport is a "terrorist's greatest weapon".

Sterling see-sawed on Monday as investors reacted to growing uncertainty over the outcome of the UK's EU referendum.

Nigel Farage has distanced himself from a tweet by leave campaigners linking the EU referendum vote to shootings in Orlando.

The UKIP leader said Leave.EU was “nothing to do with me at all”, adding: “I’m not in any way formally associated with the organisation. I just think generally after a horrible tragedy it’s best to wait a bit and keep quiet.”

Mr Farage added: “I understand some office junior sanctioned it and it’s now been withdrawn.”

Image source, AFP/Getty Images

Liberal Democrat leader Tim Farron has added his voice to the widespread condemnation of Leave.EU's tweet about the Orlando shooting.

"The latest poster from the Leave side shows that campaign's true colours," he said.

"It is scaremongering at its worst. Their decision to take the poster down but not apologise is cowardly. They know they've crossed the line and should apologise."

Leaving the EU would have a "profound economic shock" on Wales, the Chancellor George Osborne warns.

David Cameron has written to President Obama to express shock and offer support to Americans following the mass shooting in Orlando.

The prime minister’s official spokeswoman said Mr Cameron had written to the President “to underline our shock here and our support for the US people as they deal with this incident”.

She added that Mr Cameron was being regularly briefed on the situation.

Gordon Brown is asked what he would say to Labour voters who are concerned about immigration.

The best way to address those concerns is to make sure pressure on public services is "relieved", the former PM says.

He backs a "European solidarity fund for areas and communities that are hard-hit by population rises".

The former PM insists he is "not underplaying" the concerns of voters on the doorstep.

House of Commons
Parliament

Theresa May has condemned the tweet from the official Leave.EU Twitter account linking Orlando to the EU referendum.

The home secretary said the image was “utterly irresponsible”.

She told MPs attempts to link the attack to the EU vote “should rightly be condemned on all sides of this House”.

An audience member asks Gordon Brown about Leave.EU's use of the Orlando shootings in its campaign. The questioner says it is "crass and disgraceful".

Mr Brown does not address the tweet directly but pays tribute to victims of the attack, which he calls "atrocious and appalling".

He says anyone who is "persecuted and discriminated against" should be supported.

A group that wants lower immigration has forecast that if Britain stays in the EU, net migration could exceed 250,000 a year until 2035, but Remain says quitting isn't the answer.

Gordon Brown ends his speech by recalling the words of Nelson Mandela, who said he wanted to "put co-operation above division".

"What sort of message would we sent to the world on June 23?" he asks, if the UK decides "to walk away from our nearest neighbours".

Mr Brown continues: "This is not the Britain I know. This is not the Britain I believe in."

House of Commons
Parliament

Labour MP Stephen Doughty says, after the Orlando shootings, "love wins even in the darkness".

He urges people to go to vigils and to Pride events, and asks for reassurance that those who attend will be adequately protected.   

Home Secretary Theresa May replies that "we do look at all sorts of risk" in this country, agreeing that "it is not just a question of standing in this chamber and making statements... it is about our day-to-day interactions".

House of Commons
Parliament

Home Secretary Theresa May tells LGBT people "we will not tolerate such bigotry and violence" and adds that no venues in the UK hosting LGBT events have been advised to postpone or cancel.

She says there were no UK nationals injured in the Orlando attacks.

She is responding to an urgent question from Labour's Stephen Doughty on the UK's security in light of the shootings in which 50 people were killed, the deadliest mass shooting in US history.