Kasabian paint cryptic message on wall in east London
Serge Pizzorno and Tom Meighan appeared in white overalls to paint '48:13' on neon pink background
Just hours after their headline slot at Glastonbury was announced, Tom Meighan and Serge Pizzorno – wearing overalls with the words 'malted milk' printed on the back – covered the wall in luminous pink paint before adding the stencilled numbers in black.
The building, next to a nail bar on Dalston's Kingsland Road, belongs to artist and fashion designer Aitor Throup.
Throup, who designed the cover artwork for 2011's 'Velociraptor!' album and directed the video for 'Switchblade Smiles', said: "Kasabian are my brothers. I met Tom when he wore the England football shirt I designed onstage. We've worked together since then  and I've done set design for them at Reading and Leeds Festival and the Olympic Park show (in 2013)."
Standing outside his studio, smiling at the band's handiwork he added: "I don't think Tom's ever picked up a paintbrush in his life! He has good graffiti skills, but Serge was a bit better with a roller."
Throup, whose menswear Kasabian have frequently worn onstage, wouldn't be drawn on the meaning of the paintwork, but said it was "part of something bigger".
He explained the timing of the stunt with today's Glastonbury announcement was "a nice coincidence". "It's exciting isn't it? Of course they're headlining, man. If they're not ready for it I don't know who is."
Before heading back into his studio he said: "I'll give you one clue to what it all means. Malted Milk. Like the biscuits. You'll see."
Aitor Throup has recently worked with Damon Albarn on directed the visual concepts and artwork for the former Blur singer's debut album, 'Everyday Robots'.
Kasabian headline the Pyramid Stage at Glastonbury Festival on June 29.