London

An MP wears white roses in her hair as she arrives with other MPs at St Margaret's Church, London, for a service of prayer and remembrance to commemorate Jo Cox MP. PRESS ASSOCIATION Photo. Picture date: Monday June 20, 2016. Members of the UK Parliament attended the service to commemorate Labour MP Jo Cox. Addresses were given by the Speaker’s Chaplain, the Reverend Rose Hudson-Wilkin with readings by the Speaker, the Honourable John Bercow and Glenys Kinnock, Baroness Kinnock of Holyhead. See PA story POLITICS MP Service. Photo credit should read: Nick Ansell/PA Wire

Nick Ansell/PA Wire

An MP wears white roses in her hair as she arrives with other MPs at St Margaret’s Church, London, for a service of prayer and remembrance to commemorate Jo Cox MP.

Rain Heralds The First Day Of British Summer...LONDON, ENGLAND - JUNE 20: Tourists carrying umbrellas take pictures on Westminster Bridge on June 20, 2016 in London, England. The first day of British Summer is marked by rainy weather in London today with more showers forecast for much of the week ahead. (Photo by Jack Taylor/Getty Images)

Jack Taylor/Getty

Tourists carrying umbrellas take pictures on Westminster Bridge in London, England. The first day of British Summer is marked by rainy weather in London today with more showers forecast for much of the week ahead

A boat carrying supporters for the Remain in the EU campaign including Sir Bob Geldoff (C) shout and wave at Brexit fishing boats as they sail up the river Thames in central London on June 15, 2016. A Brexit flotilla of fishing boats sailed up the River Thames into London today with foghorns sounding, in a protest against EU fishing quotas by the campaign for Britain to leave the European Union. / AFP PHOTO / BEN STANSALLBEN STANSALL/AFP/Getty Images

Ben Stansall/AFP/Getty

A boat carrying supporters for the Remain in the EU campaign including Sir Bob Geldoff shout and wave at Brexit fishing boats as they sail up the river Thames in central London

Britain's Prime Minister David Cameron and his wife Samantha arrive for a service of thanksgiving for Queen Elizabeth's 90th birthday at St Paul's cathedral in London, Britain, June 10, 2016. REUTERS/Peter Nicholls

Peter Nicholls/Reuters

Britain’s Prime Minister David Cameron and his wife Samantha arrive for a service of thanksgiving for Queen Elizabeth’s 90th birthday at St Paul’s cathedral in London

Chris Ratcliffe/Bloomberg

A man, wearing socks featuring the design of the British Union Flag, commonly known as a Union Jack, stands in London. U.K. Prime Minister David Cameron said he’ll hold a long-pledged referendum on the U.K.’s membership of the European Union on June 23 

Former manager of Chelsea and current manager of Manchester United Jose Mourinho, centre, tries to get in the back of a car as he leaves after attending an employment tribunal for former Chelsea team doctor Eva Carneiro at the Croydon Employment Tribunal in Croydon, south London

Matt Dunham/AP

Former manager of Chelsea and current manager of Manchester United Jose Mourinho, centre, tries to get in the back of a car after attending an employment tribunal for former Chelsea team doctor Eva Carneiro at the Croydon Employment Tribunal in Croydon, south London.

A graffiti mural of boxer Muhammad Ali and singer Prince - who would have been 58 today - in Camberwell, south London

Yui Mok/PA

A graffiti mural of boxer Muhammad Ali and singer Prince – who would have been 58 today – in Camberwell, south London

A Chelsea Pensioner is seen through New Covent Garden Flower Market's tribute to Queen Elizabeth II - a three metre high profile of the Queen made from over 5,000 cut flowers, during a press day ahead of the Chelsea Flower Show at the Royal Hospital Chelsea in London. PRESS ASSOCIATION Photo. Picture date: Monday May 23, 2016. See PA story CONSUMER Chelsea. Photo credit should read: Yui Mok/PA Wire

Yui Mok/PA

A Chelsea Pensioner is seen through New Covent Garden Flower Market’s tribute to Queen Elizabeth II. The three meter high profile of the Queen is designed by Veevers Carter and made from over 5,000 cut flowers during a press day ahead of the Chelsea Flower Show at the Royal Hospital Chelsea in London 

LONDON, ENGLAND - MAY 20:  Poppies are installed in an installation at Royal Hospital Chelsea on May 20, 2016 in London, England. The installation comprises of a tribute of almost 300,000 handcrafted poppies created by landscape designer Phillip Johnson. The display is in honour of all servicemen and women who have fought across all wars, conflicts and peacekeeping operations over the last 100 years, and will be on display at the 2016 RHS Chelsea Flower Show from 24-28 May 2016.  (Photo by Dan Kitwood/Getty Images)

Dan Kitwood/Getty

Poppies are installed in an installation at Royal Hospital Chelsea in London. The installation comprises of almost 300,000 handcrafted poppies created by landscape designer Phillip Johnson. The display is in honour of all servicemen and women who have fought across all wars, conflicts and peacekeeping operations over the last 100 years, and will be on display at the 2016 RHS Chelsea Flower Show.

Mayor of London Sadiq Khan (left) meets former mayor of New York Michael Bloomberg at City Hall in London

Stefan Rousseau/PA

Mayor of London Sadiq Khan (left) meets former mayor of New York Michael Bloomberg at City Hall in London today, as the billionaire has warned Brexit would damage Britain’s economy.

Greenpeace protesters climb the British Museum in London, in protest against BP's sponsorship of the museum's Sunken Cities exhibition. PRESS ASSOCIATION Photo. Picture date: Thursday May 19, 2016. See PA story ENVIRONMENT Protest. Photo credit should read: Anthony Devlin/PA Wire

Anthony Devlin/PA

Greenpeace protesters climb the British Museum in London, in protest against BP’s sponsorship of the museum’s Sunken Cities exhibition

Swimming- European Aquatics Championships- London, Britain, 19/5/2016. Sweden's Louise Hannson starts in the women's 100m butterfly preliminary event.   REUTERS/Stefan Wermuth

Stefan Wermuth/Reuters

Sweden’s Louise Hannson starts in the women’s 100m butterfly preliminary event European Aquatics Championships London, Britain

Queen Elizabeth II leaves Buckingham Palace, London, ahead of the State Opening of Parliament. PRESS ASSOCIATION Photo. Picture date: Wednesday May 18, 2016. See PA story POLITICS Speech. Photo credit should read: Dominic Lipinski/PA Wire

Dominic Lipinski/PA

Queen Elizabeth II leaves Buckingham Palace, London, ahead of the State Opening of Parliament 

Artists, Jeff Koons and Damien Hirst pose during a photocall to launch the Newport Street Gallery in London with Koon's piece "Play-Doh".

Charlie Bibby/FT

Artists, Jeff Koons and Damien Hirst pose during a photocall for the exhibition ‘Now’ with Koon’s piece Play-Doh at Newport Street Gallery in London 

LONDON, ENGLAND - MAY 17:  UKIP leader Nigel Farage and Jacob Rees-Mogg MP speak ahead of the Bruges Group press conference on May 17, 2016 in London, England. The event focused on the issues surrounding the European Arrest Warrant and how Britain would be, in the opinion of the speakers, better placed outside of the European Union.  (Photo by Dan Kitwood/Getty Images)

Dan Kitwood/Getty

UKIP leader Nigel Farage and Jacob Rees-Mogg MP speak ahead of the Bruges Group press conference in London, England. The event focused on the issues surrounding the European Arrest Warrant and how Britain would be, in the opinion of the speakers, better placed outside of the European Union

James Massey of Piper's Model Makers cleans the City of London s official 1:500th scale architectural model of central London, which has gone on public display at the City Centre gallery, London.

Dominic Lipinski/PA

James Massey of Piper’s Model Makers cleans the City of London’s official 1:500th scale architectural model of central London, which has gone on public display at the City Centre gallery, London

Mayoral visit to Sir John Cass's Foundation Primary School...Newly elected Mayor of London, Sadiq Khan, meets pupils at Sir John Cass's Foundation Primary School in the City of London, where he helped the children plant seeds and flowers on their green roof garden after seeing an air pollution monitoring station in the playground. PRESS ASSOCIATION Photo. Picture date: Friday May 13, 2016. Mr Khan has promised to clean up London's toxic air - as he revealed he has only recently started suffering from asthma. See PA story POLITICS Khan. Photo credit should read: Stefan Rousseau/PA Wire

Stefan Rousseau/PA

Newly elected Mayor of London, Sadiq Khan, meets pupils at Sir John Cass’s Foundation Primary School in the City of London, where he helped the children plant seeds and flowers on their green roof garden after seeing an air pollution monitoring station in the playground

epa05301082 Nigerian President Muhammadu Buhari (R) and British Prime Minister David Cameron (L) during the Anti-Corruption Summit in Lancaster House in London, Britain, 12 May 2016. The Summit comes after the publication in April 2016 of the so-called Panama Papers leak on offshore tax havens and the people involved.  EPA/FACUNDO ARRIZABALAGA / POOL

Facundo Arrizabalaga/EPA

Nigerian President Muhammadu Buhari and British Prime Minister David Cameron during the Anti-Corruption Summit in Lancaster House in London 

Nigerian President Muhammadu Buhari list...Nigerian President Muhammadu Buhari listens at the start of a conference to tackle corruption at the Commonwealth Secretariat in London on May 11, 2016. / AFP PHOTO / LEON NEALLEON NEAL/AFP/Getty Images

Leon Neal/AFP

Nigerian President Muhammadu Buhari listens at the start of a conference to tackle corruption at the Commonwealth Secretariat in London

Britain's opposition Labour Party leader Jeremy Corbyn and shadow Minister for Young People, Gloria De Piero (L) stand in front of the "Labour In For Britain" campaign bus at a launch in central London, on May 10, 2016. The referendum campaign was picking up pace again after regional and local elections last Thursday which saw Labour's Sadiq Khan elected as London's new mayor, and pro-independence nationalists returned to power in Scotland, albeit without a majority. Main opposition Labour leader Jeremy Corbyn was now being urged to get more involved in the EU referendum campaign.  / AFP PHOTO / LEON NEALLEON NEAL/AFP/Getty Images

Leon Neal/AFP

Britain’s opposition Labour Party leader Jeremy Corbyn and shadow Minister for Young People, Gloria De Piero stand in front of the “Labour In For Britain” campaign bus at a launch in central London