United Kingdom

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 

Former Mayor of London Boris Johnson and fellow Vote Leave campaigner Gisela Stuart MP enjoy an ice cream while in Charlestown, Cornwall, during a Vote Leave campaign visit

Stefan Rousseau/PA

Boris Johnson and fellow Vote Leave campaigner Gisela Stuart MP enjoy an ice cream while in Charlestown, Cornwall, during a Vote Leave campaign visit

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

Finland's Jouni Kallunki competes in the 1m Men Springboard Preliminary round during day two of the European Aquatics Championships at the London Aquatics Centre in Stratford. PRESS ASSOCIATION Photo. Picture date: Tuesday May 10, 2016. See PA story DIVING London. Photo credit should read: John Walton/PA Wire. RESTRICTIONS: Editorial use only, No commercial use without prior permission, please contact PA Images for further information: Tel: +44 (0) 115 8447447.

John Walton/PA Wire

Finland’s Jouni Kallunki competes in the 1m Men Springboard Preliminary round during day two of the European Aquatics Championships at the London Aquatics Centre in Stratford. 

 Emergency forces and shoppers take place in a simulated terror attack at the Trafford Centre on 10 May, 2016 in Manchester, England

Sean Hansford/MEN – Pool / Getty Images

Emergency forces and shoppers take place in a simulated terror attack at the Trafford Centre in Manchester, England today

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 

Swimming- European Aquatics Elite Championships- Solo free preliminary synchronized swimming- London...Swimming- European Aquatics Championships- London, Britain, 9/5/2016. Anna Voloshyna of Ukraine competes during solo free preliminary synchro event.       REUTERS/Andrew Boyers

Andrew Boyers/Reuters

Anna Voloshyna of Ukraine competes during solo free preliminary synchro event at the European Aquatics Championships in London 

London Mayoral Election Count...LONDON, ENGLAND - MAY 06:  Count staff open ballot boxes and throw empties on to a pile during the London Mayoral and Assembly election count at Kensington Olympia on May 6, 2016 in London, England. This is the fifth mayoral election since the position was created in 2000. Previous London Mayors are Ken Livingstone for Labour and more recently Boris Johnson for the Conservatives. The main candidates for 2016 are Sadiq Khan, Labour, Zac Goldsmith, Conservative, Suan Berry, Green, Caroline Pidgeon, Liberal Democrat, George Galloway, Respect, Peter Whittle, UKIP and Sophie Walker, Wonmen's Equality Party.  (Photo by Chris Ratcliffe/Getty Images)

Chris Ratcliffe/Getty

Count staff open ballot boxes and throw empties on to a pile during the London Mayoral and Assembly election count at Kensington Olympia in London, England. This is the fifth mayoral election since the position was created in 2000

Polls close as counting is under way in Scottish Parliament elections...epaselect epa05291485 Leader of the Scottish National Party (SNP), Nicola Sturgeon (C) reacts after a positive result for her party at the Emirates Arena in Glasgow, Scotland, Britain, 06 May 2016. The 2016 Scottish Parliament election, which elects 129 members to the Scottish Parliament, was held on 05 May 2016.  EPA/ROBERT PERRY

Robert Perry/EPA

Leader of the Scottish National Party (SNP), Nicola Sturgeon (C) reacts after a positive result for her party at the Emirates Arena in Glasgow, Scotland. The 2016 Scottish Parliament election, which elects 129 members to the Scottish Parliament 

David Cameron Greets The Prime Minister Of Japan...LONDON, ENGLAND - MAY 05:  British Prime Minister, David Cameron, meets the Prime Minister of Japan, Shinzo Abe, at Downing Street on May 5, 2016 in London, England. Mr Abe is the current serving Prime Minister of Japan and was re-elected to the position in December 2012.  (Photo by Chris Ratcliffe/Getty Images)

Chris Ratcliffe/Getty

British Prime Minister, David Cameron, meets the Prime Minister of Japan, Shinzo Abe, at Downing Street

House of Fraser BAFTA TV Awards preparations - London...Members of BAFTA staff adjust heads on sticks showing the seating plan for nominees and guests at the House of Fraser BAFTA TV Awards, at the Royal Festival Hall, London. PRESS ASSOCIATION Photo. Picture date: Thursday May 5, 2016.

Dominic Lipinski/PA

Members of BAFTA staff adjust heads on sticks showing the seating plan for nominees and guests at the House of Fraser BAFTA TV Awards, at the Royal Festival Hall, London

Scottish Conservative leader Ruth Davidson speaks to local residents at the Scottish Maritime Academy during a coast-to-coast tour by helicopter as campaigning continues for the Holyrood election on May 3, 2016 in Peterhead, United Kingdom. As campaigning for the Holyrood election enters its last forty eight hours, recent polls suggest the Conservatives are virtually neck-and-neck with Labour in the race to be the main opposition party in Scotland

Jeff J Mitchell/Getty Images

Scottish Conservative leader Ruth Davidson speaks to local residents at the Scottish Maritime Academy during a coast-to-coast tour by helicopter as campaigning continues for the Holyrood election today in Peterhead, United Kingdom

LONDON, ENGLAND - MAY 03: Nigel Farage, leader of the United Kingdom Independence Party, is pictured in front of the party's final election poster of the London Mayoral election campaign in Smith Square, Westminster, on May 3, 2016 in London, England. The election will decide which candidate replaces the current mayor Boris Johnson and pollsters are predicting a close contest between Labour's Sadiq Khan and Zac Goldsmith when London goes to the polls on May 5th 2016.  (Photo by Mary Turner/Getty Images)

Mary Turner/Getty

Nigel Farage, leader of the United Kingdom Independence Party, is pictured in front of the party’s final election poster of the London Mayoral election campaign in Smith Square, Westminster, London

The sun rises beside St Mary's Lighthouse  in Whitley Bay

Owen Humphreys/PA

The sun rises beside St Mary’s Lighthouse in Whitley Bay, Tyne and Wear 

Bluebells are lit by the rising sun in Micheldever Wood in Hampshire.

Andrew Matthews/PA

Bluebells are lit by the rising sun in Micheldever Wood in Hampshire.

Flowers are laid and candles are lit on the steps of St Georges Hall in Liverpool,north west England in remembrance of the 96 Liverpool fans who died in the Hillsborough football stadium disaster.

Paul Ellis/Getty Images

Flowers are laid and candles are lit on the steps of St Georges Hall in Liverpool,north west England in remembrance of the 96 Liverpool fans who died in the Hillsborough football stadium disaster.

The picket line outside King's College Hospital in London, as thousands of junior doctors begun the first all-out strike in the history of the NHS after the Health Secretary said the Government would not be "blackmailed" into dropping its manifesto pledge for a seven-day health service. PRESS ASSOCIATION Photo. Picture date: Tuesday April 26, 2016. The impasse between the Government and the British Medical Association (BMA) prompted the industrial action, from 8am to 5pm on Tuesday and again on Wednesday. See PA story HEALTH Doctors.

David Wilcock/PA Wire

The picket line today outside King’s College Hospital in London, as thousands of junior doctors begun the first all-out strike in the history of the NHS after the Health Secretary said the Government would not be “blackmailed” into dropping its manifesto pledge for a seven-day health service. The impasse between the Government and the British Medical Association (BMA) prompted the industrial action, from 8am to 5pm on Tuesday and again on Wednesday.

Spring weather Apr 26th 2016...Rough sea at Seaham Harbour in County Durham, as snow and high winds sweep across the North East. PRESS ASSOCIATION Photo. Picture date: Tuesday April 26, 2016. Despite the approach of May, forecasters say that summer will feel a long way off. Photo credit should read: Owen Humphreys/PA Wire

Owen Humphreys/PA

Rough sea at Seaham Harbour in County Durham, as snow and high winds sweep across the North East of England

His Excellency the Rt Hon Sir Lockwood Smith (left), High Commissioner for New Zealand, and His Excellency the Hon Alexander Downer AC,High Commissioner for Australia, laying wreaths at the Tomb of the Unknown Warrior during the annual Service of Commemoration and Thanksgiving to Mark ANZAC Day at Westminster Abbey, London. PRESS ASSOCIATION Photo. Picture date: Monday April 25, 2016. Anzac Day has been commemorated in the capital since the first anniversary of the Anzac landings at Gallipoli in 1916, when King George V attended a service at Westminster Abbey.

Yui Mok/PA Wire

His Excellency the Rt Hon Sir Lockwood Smith (left), High Commissioner for New Zealand, and His Excellency the Hon Alexander Downer AC, High Commissioner for Australia, laying wreaths at the Tomb of the Unknown Warrior during the annual Service of Commemoration and Thanksgiving to Mark ANZAC Day at Westminster Abbey, London today.

Photographers in the press pen as Prime Minster David Cameron welcomes US President Barack Obama to Downing Street

Lauren Hurley/PA

Photographers in the press pen as Prime Minster David Cameron welcomes US President Barack Obama to Downing Street