remember we said it was Coldplay for Glastonbury Festival?

Farmer and founder of Glastonbury Festival Michael Eavis has sparked new speculation about the third headline act following a talk last night at London's Victoria & Albert Museum where he discussed music, politics and the history of the festival.

After the session Eavis hinted that the Sunday headliner consisted of two acts to be announced. The next announcement is set for the 1st June and will be a "big one". When further pressed he also apparently revealed the bands involved were "most likely" British and that Coldplay's Chris Martin was involved.

eFestivals revealed last year that our sources had suggested Martin was to headline but we were then told by Emily Eavis that they were not the final headlining act this year.

Last night's V&A event coincided with the 45th anniversary of Earth Day (which takes place on Tuesday 20th April) which was celebrated last weekend in Washington in the White House’s backyard.

The outdoor concert saw acts including My Morning Jacket, Train, Fall Out Boy, and Mary J Blige play to an audience that was estimated to exceed 300,000 people, and was headlined by No Doubt who were joined on stage by Usher, and Will.i.am  and Global Citizen’s curator for the next 15 years, Chris Martin.

Chris Martin has always been a leading light in the 'Drop The Debt' campaign and is the figurehead of the humanitarian group's 15-year campaign to help 1.2 billion people currently living in poverty globally. Global Citizen and the United Nations' Sustainable Development Goals hope to put new actions in place to help make poverty history by 2030 and asks citizens across the world call for a just and fair world trade.

Earlier this year he told journalists, "I’m Chris, I’m from the band Coldplay, some of you probably have slagged us off in your magazines. I always felt that, as a musician, we show up for one day for a cause and we really believe in what we’re talking about, but then the next day we have our own concerns. I want to try to have a more long-term relationship between artists and people who are really trying to affect change in the world."

This year marks a big milestone for end global poverty and climate change events wiith Live Earth - The Concert for a Climate in Crisis returning this summer with a European date set for Paris on Saturday 18th July 2015. It's possible that Glastonbury's brace of headlining acts or possibly an augmented supergoup may head up that event too.

eFestivals is wondering if that could include No Doubt whose 2015 comeback gig last weekend was the first in a planned series of nearly a dozen festivals for the band this year, six of which have been announced in the USA in May and September. The band also last appeared at the festival back in 2002.

Speaking at the Grammys back in February, No Doubt lead singer Gwen Stefani, said, "We did do some music, and we have some stuff on file, and we'll probably be doing some more, and we have about five big shows coming up and some festivals".

This year also marks the 30th year of Live Aid, and its possible that Chris Martin could appear alongside an act or acts that graced that bill, with some of the more wild suggestions from fans including members of Queen, or Pink Floyd.

Although at this stage just about anything is possible, we just don't know. However, it's clear the Festival organisers do, and we'll just have to wait and see in June who it will be.

Acts confirmed so far include Friday headliner Foo Fighters, and Saturday headliner Kanye West, with Father John Misty, Courtney Barnett, Lionel Richie, Patti Smith & her band, Florence + The Machine, Pharrell Williams, Alt-J, Motorhead, Mary J Blige, Alabama Shakes, Paloma Faith, The Waterboys, The Fall, George Ezra, Rudimental, Deadmau5, The Vaccines, The Maccabees, Suede, The Chemical Brothers (live), Belle & Sebastian, Clean Bandit, Jungle, Jamie XX, Gregory Porter, Super Furry Animals, Jon Hopkins, Sharon Van Etten, Kate Tempest, Wolf Alice, Perfume Genius, Fat White Family, La Roux, Death Cab For Cutie, Kasai Allstars, FFS (Franz Ferdinand & Sparks), Modestep, Circa Waves, Peace, Young Fathers, The Moody Blues, Chronixx, Mavis Staples, FKA Twigs, Caribou, Goat, Future Islands, Run the Jewels, Hot Chip, Flying Lotus, Azealia Banks, Todd Terje, Ryan Adams, Spiritualized, Roy Ayers, The Mothership Returns: George Clinton, Parliament, Funkadelic & The Family Stone, Jamie T, Ben Howard, Mark Ronson, Ibeyi, Rae Morris, Enter Shikari, Lianne La Havas, Jessie Ware, Death From Above 1979, Years And Years, Sleaford Mods, Charli XCX, The Pop Group, Catfish & The Bottlemen, Ella Eyre, Hozier, and the entrants for the Emerging Talent competition Declan McKenna, Shields, K.O.G & the Zongo Brigade, MoD, Princess Slayer, Lucy Kitchen, Isaac Lee-Kronick, and Jakl.

This year's sold out Glastonbury Festival runs for five full days from Wednesday 24th until Sunday 28th June 2015 across over a 1,000 acres of beautiful countryside at Worthy Farm, Pilton in Somerset.

As ever, entry includes a free programme. Once again, the Festival will be raising more than £2 million in funds for Oxfam, Wateraid, Greenpeace and and hundreds of other worthy causes, both local and international.

The full complete line-up will not be announced until next month. Expect something like 2,000 performances at over 100 venues including music, cabaret, theatre, circus, a fantastic Kidz area, poetry, green crafts and information, site art, decor, and loads, loads more ... much more than just the music, so make sure you check it all out!

As usual eFestivals will bring you the very best-sourced rumours, allowing festival-goers to see who is playing long before the bands are formally announced - keep your eyes on the Glastonbury 2015 rumours, updated as we receive information.

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