London

Chelsea pensioners attend the annual Founder's Day parade at Royal Hospital Chelsea in London June 5, 2014.

Olivia Harris/Reuters

Chelsea pensioners attend the annual Founder’s Day parade at the Royal Hospital Chelsea in London, on Thursday

Hand-painted models depicting a lion's head, pose for the photographers during a photo-op in central London's Carnaby Street, Tuesday, June 3, 2014. It was part of events marking the opening of the Zoological Society of London(London Zoo) first ever pop-up shop on the famous street, part of the Lions400 campaign to expose the plight of the endangered Asian lion.

Lefteris Pitarakis/AP

Hand-painted models depicting a lion’s head pose in central London’s Carnaby Street. It was part of events marking the opening of the Zoological Society of London’s first ever pop-up shop on the famous street, part of the Lions400 campaign to expose the plight of the endangered Asian lion

Chelsea Flower Show 2014 - Press Day...LONDON, ENGLAND - MAY 19:  Cacti are displayed in the Great Pavilion at the 2014 Chelsea Flower Show at Royal Hospital Chelsea on May 19, 2014 in London, England. The prestigious gardening show opens to the general public on May 20, 2014, and features hundreds of stands and exhibition gardens.

Dan Kitwood/Getty

Cacti on display in the Great Pavilion at the 2014 Chelsea Flower Show, which takes place in the grounds of the Royal Hospital Chelsea, London. The society gardening show opens to the public on Tuesday and features hundreds of stands and exhibition gardens Read more

Early morning sunlight is reflected thro...Early morning sunlight is reflected through fog from the top of The Shard building in central London, on April 30, 2014. AFP PHOTO / CARL COURTCARL COURT/AFP/Getty Images

Carl Court/AFP

Early morning sunlight is reflected through fog from the top of The Shard building in central London on Wednesday morning Read more

Commuters board an underground train at King's Cross station in London April 29, 2014. Millions of commuters faced transport chaos on Tuesday after eleventh-hour talks failed to avert a two-day strike on the London Underground train network over plans to cut jobs and close ticket offices.

Neil Hall/Reuters

Commuters board an underground train at King’s Cross station in London. Millions of people faced transport chaos on Tuesday after talks failed to avert a two-day strike on the London Underground train network over plans to cut jobs and close ticket offices.

Cacti on display in the Royal Horticultural Society's 'Great London Plant Fair' in the RHS Lawrence and Lindley Halls on April 1, 2014 in London, England. The show, which aims to celebrate the vibrancy of spring, includes the 'RHS Early Daffodil Competition' and runs until April 4, 2014.

Oli Scarff/Getty Images

Cacti on display in the Royal Horticultural Society’s Great London Plant Fair in the RHS Lawrence and Lindley Halls on Tuesday in London, England. The show, which aims to celebrate the vibrancy of spring, includes the RHS Early Daffodil Competition and runs until Friday.

A man carries "Schwarze Spitzen" by Wassily Kandinsky from 1937  on display at Christie's auction house in London...A man carries "Schwarze Spitzen" by Wassily Kandinsky from 1937, on display at Christie's auction house in London March 28, 2014. The painting is expected to earn 2.4-3.6 million GB pounds (4-6 million U.S. dollars)  when auctioned in New York on May 6. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENTERTAINMENT BUSINESS SOCIETY)

Stefan Wermuth/Reuters

A man carries “Schwarze Spitzen” by Wassily Kandinsky from 1937, on display at Christie’s auction house in London. The painting is expected to earn 2.4-3.6 million GB pounds (4-6 million U.S. dollars) when auctioned in New York on May 6 Read more

The coffin of the late Tony Benn is carried into the grounds of Westminster Abbey and St Margaret's Church for his funeral in London, England. Former Labour cabinet minister and opponent to the Iraq War Tony Benn, died at the age of 88 on March 14, 2014.

Dan Kitwood/Getty Images

The coffin of the late Tony Benn is carried into the grounds of Westminster Abbey and St Margaret’s Church for his funeral in London, England. Former Labour cabinet minister and opponent to the Iraq War Tony Benn, died at the age of 88 on March 14, 2014.

A woman views the Sutton Hoo Helmet on display in the new gallery 'Sutton Hoo and Europe AD 300-1100'  in the British Museum on March 25, 2014 in London, England. The exhibition in the museum's early medieval collections marks 75 years since the discovery of the Sutton Hoo treasure. The gallery's centrepiece are the archelogical finds from the Sutton Hoo ship burial in Suffolk; one of Britain's most spectacular and important discoveries. The exhibition opens to the general public on March 27, 2014.

Oli Scarff/Getty Images

A woman views the Sutton Hoo Helmet on display in the new gallery ‘Sutton Hoo and Europe AD 300-1100′ in the British Museum on Tuesday in London, England. The exhibition in the museum’s early medieval collections marks 75 years since the discovery of the Sutton Hoo treasure.

Well-wishers greet the horse-drawn funeral cortege of RMT General Secretary Bob Crow as it arrives at the City of London Crematorium on March 24, 2014 in London, England. Mr Crow, the outspoken leader of the Rail, Maritime and Transport Workers Union, died of a suspected heart attack, aged 52, on March 11, 2014.

Oli Scarff/Getty Images

Well-wishers greet the horse-drawn funeral cortege of RMT General Secretary Bob Crow as it arrives at the City of London Crematorium on Monday in London, England. Mr Crow, the outspoken leader of the Rail, Maritime and Transport Workers Union, died of a suspected heart attack, aged 52, on March 11, 2014.