Music
Rex Features
Rumours of a reunion have been rife following the band's one-off gig in London earlier this month, but Robert Plant has continually dismissed the speculation.
However, a friend told the Daily Express: "It will kick off at next year's Glastonbury after Robert has finished touring with American country star Alison Krauss.
"Plant and Krauss have a new album out right now and he is committed to that for the next couple of months at least."
It was rumoured earlier this month that the band were planning a tour.
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