The surviving members of Led Zeppelin have defended their decision not to allow their 1985 Live Aid performance appear on a new charity DVD of the concert which is being released to raise money for Sudan.

In a statement, the trio of Robert Plant, Jimmy Page and John Paul Jones said they were in full support of the fundraising project but felt that both the sound and general reproduction of their performance at Live Aid Philadelphia was sub-standard.

Plant and Page are giving the proceeds from their upcoming DVD to the Sudan fundraising campaign, while Jones will give the proceeds from his current US tour to the project.

Live Aid founder Bob Geldof hopes to raise up to £320m for famine relief by selling 8m copies of the Live Aid concert DVD.