England

Members of the emergency services take part in Exercise Strong Tower outside the disused Aldywch tube station on Surrey Street onTuesday in London, England.  The counter-terrorism training exercise will involve as many as 1,000 officers and will take place across the city until Wednesday afternoon

Rob Stothard/Getty Images

Members of the emergency services take part in Exercise Strong Tower outside the disused Aldywch tube station on Surrey Street on Tuesday in London, England

A member of ground staff updates a fixtures board on day two of Wimbledon tennis tournament on June 30, 2015 in London, England. The 129th tournament to be hosted at Wimbledon is due to run for two weeks from Monday 29th June

Carl Court/Getty Images

A member of ground staff updates a fixtures board on day two of Wimbledon tennis tournament on Tuesday in London, England. The 129th tournament to be hosted at Wimbledon is due to run for two weeks

Serena Williams of U.S.A. reacts during her match against Margarita Gasparyan of Russia at the Wimbledon Tennis Championships in London...Serena Williams of U.S.A. reacts during her match against Margarita Gasparyan of Russia at the Wimbledon Tennis Championships in London, June 29, 2015

Toby Melville/Reuters

Serena Williams of U.S.A. reacts during her match against Margarita Gasparyan of Russia at the Wimbledon Tennis Championships in London on Monday

Revellers walk through rubbish left in front of the Pyramid Stage as they leave Worthy Farm in Somerset after the Glastonbury Festival in Britain June 29, 2015

Dylan Martinez/Reuters

Revellers walk through rubbish left in front of the Pyramid Stage as they leave Worthy Farm in Somerset after the Glastonbury Festival in Britain on Monday

A man takes his jacket off as he settles into his deck chair on a sunny day in St. James Park in London, Britain on Wednesday

Suzanne Plunkett/Reuters

A man takes his jacket off as he settles into his deckchair on a sunny day in St James’s Park, London

A festivalgoer rests in the sunshine at the Glastonbury Festival, at Worthy Farm in Somerset. PRESS ASSOCIATION Photo. Picture date: Wednesday June 24, 2015. Organisers believe around 90% of the 135,000 ticket-holders will have set up camp by the end of the day, in a bid to get the best camping spots.

Ben Birchall/PA

A festival-goer rests in the sunshine at the Glastonbury Festival, at Worthy Farm in Somerset. Organisers believe about 90% of the 135,000 ticket-holders will have set up camp by the end of the day on Wednesday.

Racegoers await the start of racing on day four of the 2015 Royal Ascot Meeting at Ascot Racecourse, Berkshire

Dominic Lipinski/PA

Racegoers await the start of racing on day four of the 2015 Royal Ascot Meeting at Ascot Racecourse, Berkshire on Friday

Race goers walk from the train station as they arrive for the third day of the Royal Ascot horse racing meet at Ascot, England, Thursday, June 18, 2015. The third day of Royal Ascot is traditional known as Ladies day, where fashion and hats come to the fore

Alastair Grant/AP

Race goers walk from the train station as they arrive for the third day of the Royal Ascot horse racing meet at Ascot, England on Thursday. The third day of Royal Ascot is traditional known as Ladies day, where fashion and hats come to the fore

Horse Racing - The Royal Ascot Meeting 2015 - Day Two - Ascot Racecourse...Racegoer Chelsey Baker wears a red flower hat during day two of the 2015 Royal Ascot Meeting at Ascot Racecourse, Berkshire. PRESS ASSOCIATION Photo. Picture date: Wednesday June 17, 2015. See PA story RACING Ascot. Photo credit should read: Dominic Lipinski/PA Wire. RESTRICTIONS: Use subject to restrictions. Editorial use only, no commercial or promotional use. No private sales. Call +44 (0)1158 447447 for further information

Dominic Lipinski/PA

Racegoer Chelsey Baker wears a red flower hat during day two of the 2015 Royal Ascot Meeting at Ascot Racecourse, Berkshire

 A student gives flowers to, embraces and welcomes with other young students US First Lady Michelle Obama in the courtyard before an event as part of the 'Let Girls Learn Initiative' at the Mulberry School for Girls on Tuesday in London, England. The US First Lady is travelling with her daughters, Malia and Sasha and her mother, Mrs. Marian Robinson, to continue a global tour promoting her 'Let Girls Learn Initiative'. The event at the school was to discuss how the UK and USA are working together to expand girl's education around the world

Jeff J Mitchell/Getty Images

A pupil embraces US First Lady Michelle Obama before an event at the Mulberry School for Girls in London, part of the Let Girls Learn Initiative.

Great Britain's Nick Dempsey comes home to win the first race of the day during the Men's RS:X windsurfing on day five of the ISAF Sailing World Cup at Weymouth. PRESS ASSOCIATION Photo. Picture date Wednesday June 12, 2015.

Andrew Matthews/PA

Great Britain’s Nick Dempsey comes home to win the first race of the day during the Men’s RSX windsurfing on day five of the ISAF Sailing World Cup at Weymouth on Friday

Re-enactors dressed as soldiers from the era of the Battle of Waterloo travel on an escalator after attending a memorial unveiling at Waterloo Station in London, Wednesday, June 10, 2015. The new war memorial honours all of the allied forces who fought at the Battle of Waterloo in 1815. The centrepiece is a giant replica of the reverse of the Waterloo Campaign medal

Kirsty Wigglesworth/AP

Re-enactors dressed as soldiers from the era of the Battle of Waterloo travel on an escalator after attending a memorial unveiling at Waterloo Station in London on Wednesday. The new war memorial honours all of the allied forces who fought at the Battle of Waterloo in 1815

Two gallery assistants pose with '$, 2001' an installation by Tim Noble and Sue Webster which is going on show at Sotheby's with an estimated value of  100,000- 150,000 on June 8, 2015 in London, England. The installation forms part of an exhibition of 21 works inspired by the US Dollar which are estimated to have a total value of  50 million and will go under offer by the auction house on 1st and 2nd July 2015

Mary Turner/Getty Images

Two gallery assistants pose with ‘$, 2001′ an installation by Tim Noble and Sue Webster which is going on show at Sotheby’s with an estimated value of £100,000- £150,000 on Monday in London, England

Ladies cheers home their favorite horse on Ladies Day of the 2015 Investec Derby Festival at Epsom Racecourse, Epsom. PRESS ASSOCIATION Photo. Picture date: Friday June 5, 2015

Steve Parsons/PA

Ladies cheers home their favorite horse on Ladies Day of the 2015 Investec Derby Festival at Epsom Racecourse, Epsom on Friday

Travellers drive their traditional Romany caravans along the main road in Appleby in Westmorland, Britain June 4, 2015. The caravans form part of the annual horse fair which has taken place since the 1600's

Phil Noble/Reuters

Travellers drive their traditional Romany caravans along the main road in Appleby, Westmorland, Britain. The caravans form part of the annual horse fair, which has taken place since the 1600s.

Australia's Steve Sommerfeld performs a jump on his motocross bike backdropped by the O2 Arena during a promotional event in London, Tuesday, June 2, 2015.  The publicity stunt Tuesday was to promote the freestyle motocross world tour event "Night of the Jumps" which takes place inside the O2 Arena on September 5

Matt Dunham/AP

Australia’s Steve Sommerfeld performs a jump on his motocross bike with the O2 Arena int eh background, during a promotional event in London on Tuesday

Polo on the Beach photocall...Polo players practice for the upcoming 'Polo on the Beach' match at Watergate Bay beach, Cornwall, in wet and windy conditions. PRESS ASSOCIATION Photo. Picture date: Tuesday June, 2, 2015

Ben Birchall/PA

Polo players practise for the upcoming Polo on the Beach match at Watergate Bay beach, Cornwall, in wet and windy conditions

A surfer at Tolcarne Beach, Newquay, Cornwall, as the great British summer is getting off to a blustery start with severe wind warnings issued nationwide as hopes of a heatwave are thwarted. PRESS ASSOCIATION Photo. Picture date: Monday June 1, 2015. The Met Office has warned that this week will begin with an unseasonably windy spell and even heavy rain despite bookies having slashed the odds on Britain enjoying the hottest June on record

Ben Birchall/PA

A surfer rides a wave at Tolcarne Beach, Newquay, Cornwall, as the great British summer is getting off to a blustery start with severe wind warnings issued nationwide

The Viking Star going through the Thames Barrier in London as part of its maiden voyage. PRESS ASSOCIATION Photo. Picture date: Tuesday May 12, 2015. The delivery ceremony took place on March 28th when the ship was presented at Fincantieri s Marghera shipyard outside of Venice, Italy. On April 11th, Viking Star set sail from Istanbul making her way through the Mediterranean into the Atlantic on her way to be officially christened in Bergen, Norway on May 17th. Classified by Cruise Critic as a  small ship,  the all-veranda Viking Star has a gross tonnage of 47,800 tons, 465 cabins and will accommodate 930 passengers. It is engineered to allow direct access into most ports, so guests have an easy and efficient embark and debark. The Viking Star is one of three ocean cruise ships on order; the remaining two ships, Viking Sea and Viking Sky, are currently under construction

Viking Ocean Cruises/Jeff Moore/PA

The Viking Star going through the Thames Barrier in London as part of its maiden voyage on Tuesday

The Queen's horses Alpine, Mingulay, George, Anson, Dawn and Emma with Grooms Harriet White, Zoe McDonald, Christopher Allen and Sadie Henderson on the private grounds of Windsor Castle ahead of the country's largest outdoor equestrian show, the Royal Windsor Horse Show

Steve Parsons/PA

The Queen’s horses Alpine, Mingulay, George, Anson, Dawn and Emma with Grooms Harriet White, Zoe McDonald, Christopher Allen and Sadie Henderson on the private grounds of Windsor Castle ahead of the country’s largest outdoor equestrian show, the Royal Windsor Horse Show