Festival goers board trains at Paddington station to travel to Castle Cary station for the first day of the 2014 Glastonbury Festival on June 25, 2014 in London, England. Gates opened today at the Somerset dairy farm that plays host to one of the largest music festivals in the world. Tickets to the event, which is now in its 44th year, sold out in minutes even before any of the headline acts had been confirmed. The festival, which started in 1970 when several hundred hippies paid £1, now attracts more than 175,000 people. (Photo by Rob Stothard/Getty Images)

A man blows a bubble as the gates open at the Glastonbury Festival of Music and Performing Arts in Somerset, southwest England, on June 25, 2014. US metal giants Metallica will play this year's coveted Saturday night headline spot at Britain's Glastonbury festival, organisers announced Thursday. It will be the “Master of Puppets” four-piece's first appearance at the legendary festival, held in south west England, following on from The Rolling Stones' Worthy Farm debut last year. (Photo by Leon Neal/AFP Photo)

General atmosphere during the Glastonbury Festival at Worthy Farm on June 25, 2014 in Glastonbury, England. (Photo by Ian Gavan/Getty Images)

People gather below the Glastonbury sign at Worthy Farm in Pilton on the eve of the first day of the 2014 Glastonbury Festival. (Photo by Ian Gavan/Getty Images)

A man in a glowing suit walks among festival goers, as revelers gather ahead of this weekends Glastonbury Festival of Music and Performing Arts on Worthy Farm in Somerset. (Photo by Leon Neal/AFP Photo)

A girl uses a glowing hula hoop, as revelers gather ahead of this weekends Glastonbury Festival of Music and Performing Arts on Worthy Farm in Somerset. (Photo by Leon Neal/AFP Photo)

A man in a spacesuit jumps from one of the standing stones in the stone circle, as revelers gather ahead of this weekends Glastonbury Festival of Music and Performing Arts on Worthy Farm in Somerset. (Photo by Leon Neal/AFP Photo)

A girl uses a glowing hula hoop, as revellers gather ahead of this weekends Glastonbury Festival of Music and Performing Arts on Worthy Farm in Somerset. (Photo by Leon Neal/AFP Photo)

People walk through the site at Worthy Farm in Pilton on the eve of the first day of the 2014 Glastonbury Festival. (Photo by Ian Gavan/Getty Images)

A festival goer uses a hula hoop, as revelers gather ahead of this weekends Glastonbury Festival of Music and Performing Arts on Worthy Farm in Somerset. (Photo by Leon Neal/AFP Photo)

Festival goers arrive at Worthy Farm in Pilton for the first day of the 2014 Glastonbury Festival. (Photo by Ian Gavan/Getty Images)

Gates opened at the Somerset dairy farm that plays host to one of the largest music festivals in the world. (Photo by Ian Gavan/Getty Images)

Festival goers (L to R) Liz, Lauren and Hannah, all from London, relax upon arriving for the Glastonbury Festival, at Worthy Farm in Somerset. (Photo by Yui Mok/PA Wire)

After marrying in Glastonbury, Jack and Bianca Vaughan (L) from Reading arrive at the same time as thousands of others ahead of the Glastonbury Festival of Music and Performing Arts in Somerset. (Photo by Leon Neal/AFP Photo)

Bryan Patterson, 28, from Liverpool poses for a photograph as he queues to get into Worthy Farm in Pilton for the first day of the 2014 Glastonbury Festival on June 25, 2014 in Glastonbury, England. (Photo by Matt Cardy/Getty Images)

Festival goers enjoy the fine weather as the gates open at the Glastonbury Festival of Music and Performing Arts in Somerset. (Photo by Leon Neal/AFP Photo)

People enjoy the fine weather as the gates open at the Glastonbury Festival. (Photo by Leon Neal/AFP Photo)

Festival goers arrive with their tents and drink supplies as the gates open at the Glastonbury Festival. (Photo by Leon Neal/AFP Photo)

Festival goers board trains at Paddington station to travel to Castle Cary station for the first day of the 2014 Glastonbury Festival. (Photo by Ian Gavan/Getty Images)

People enjoythe hot weather at the Glastonbury Festival, at Worthy Farm in Somerset. (Photo by Yui Mok/PA Wire)

Ria Hebden walks at the Glastonbury Festival, at Worthy Farm in Somerset. (Photo by Yui Mok/PA Wire)

A woman relaxes in a hammock during the hot weather at the Glastonbury Festival, at Worthy Farm in Somerset. (Photo by Yui Mok/PA Wire)

Laura Snowling, from London, enjoys the hot weather at the Glastonbury Festival, at Worthy Farm in Somerset. (Photo by Yui Mok/PA Wire)

A woman adorns her tent with flags from different nations to celebrate the World Cup, at the Glastonbury Festival, at Worthy Farm in Somerset. (Photo by Yui Mok/PA Wire)

A festival goer erects a tipi at Worthy Farm in Somerset during the first day of the Glastonbury Festival. (Photo by Cathal McNaughton/Reuters)

Festival goers arrive at Worthy Farm in Pilton for the first day of the 2014 Glastonbury Festival. (Photo by Ian Gavan/Getty Images)