Two Led Zeppelin members gigging in London on same night?

There was one week last December in which Jimmy Page appeared at the London theatrical premiere of the movie It Might Get Loud; Robert Plant's son Logan played with his band Sons of Albion in London one night later; and John Paul Jones spent the following two nights playing in London with Them Crooked Vultures.

There may be another close call of the Zeppelin kind in London in two weeks if rumors turn out to be true. One show featuring John Paul Jones is confirmed, but two shows -- including one on the same night -- are rumored that would be headlined by Robert Plant.

Tickets went on sale this morning for a special appearance by Them Crooked Vultures at the O2 Academy Brixton. The show on July 5 is a benefit for Brian O'Connor, a friend of Vultures singer Homme and bassist for the Eagles of Death Metal. Reports say O'Connor has been diagnosed with cancer and has no medical insurance coverage.

In the meantime, Tixdaq has published speculation that Robert Plant would announce two shows at London's HMV Forum. According to the reporting, the first show would take place the same night as the Vultures concert elsewhere in town. The second show would be July 6.

So far, no official word on the dates has been released. (Update, June 19: TBL/Web reports, "We have it on good authority that this will not be the case." Further, TBL/Web linked to an exclusive deal on pre-sale U.K. concert tickets for Plant album pre-sales placed on HMV.com by July 5.)

Tickets went on sale between March and May for 12 Plant shows booked in the Southern United States with the Band of Joy lineup that is to accompany him on his Sept. 13/14 album release. These are the only officially announced concert dates so far for Plant, although his U.S. label, Rounder Records, has said other dates would be announced.

On a related note, tickets go on sale tomorrow for a Them Crooked Vultures show to take place July 28 in Shibuya, Japan. For the moment, it is one of only six concerts remaining for the band before a scheduled hiatus so that members Homme and Dave Grohl can focus other projects with Queens of the Stone Age and Foo Fighters, respectively. Jones has not commented on what plans he may have in store beyond after their tour comes to a close following a July 30 festival appearance in Japan.

Jimmy Page made headlines last week when repeating his intention to release new music this year and to be playing concerts as well.