"Should there be a reunion tour, it's not likely to happen before September, Page said, as Plant has already committed to a tour with his latest duet partner, Alison Krauss.

"Robert Plant also had a parallel project running, and he's really busy with that project, certainly until September, so I can't give you any news," Page said.

Of the band members, Plant has expressed the most resistance to the idea of a reunion tour, stating in one interview that the "whole idea of being on a cavalcade of merciless repetition is not what it's all about."

In recent weeks, however, he has softened his position, admitting that it perhaps "wouldn't be such a bad idea to play together from time to time."

Last week, when asked once again about the possibility of a tour, he gave his most cryptic reply yet, answering, "You never know what's round the corner."

Guitarist Page has previously stated: "It's a bit selfish to do just one show. If that's it, we probably shouldn't have taken the genie out of the bottle."