They have subsequently announced further tour dates and released a new CD Back to Boomtown: Classic Rats Hits.
Geldof left the Boomtown Rats in 1986, to launch a solo career and publish his autobiography, Is That It? His first solo records sold reasonably well and spawned the hit singles "This Is The World Calling" (co-written with Dave Stewart of Eurythmics) and "The Great Song of Indifference".
In 1992, he performed at the Freddie Mercury Tribute Concert with the surviving members of Queen at the old Wembley Stadium, singing a song he jokingly claimed to have co-written with Mercury, called "Too Late God". The event caused music paper NME (who had been involved in a running feud with Geldof since his Boomtown Rats days—primarily due to his disparagement of The Clash) to call Geldof "the world's worst DJ".
Along with U2's Bono, he has devoted much time since 2000 to campaigning for debt relief for developing countries.
He briefly guest hosted the CBC children's program Switchback.
Returning to Ireland in 1975, he became lead singer of the Boomtown Rats, a rock group closely linked with the punk movement. 1 single in the UK with "Rat Trap", the first new wave chart-topper in Britain.
Following that release, Geldof toured, albeit with mixed success.
Geldof's first major charity involvement took place in September 1981, when he performed as a solo artist for Amnesty International's benefit show The Secret Policeman's Other Ball, at the invitation of Amnesty show producer Martin Lewis; he performed a solo version of "I Don't Like Mondays".
Other rock artists had 'planted a seed' and appeared to have affected Geldof in a similar manner.
It was one of the most monumental stage shows in history, with Phil Collins flying on Concorde so that he could play at both Wembley and Philadelphia on the same day.
During the broadcast of Live Aid, Geldof shocked viewers into giving cash by not only twice mouthing profanities but also by slamming his fist on the table and ordering them not to go out to the pub but to stay in and watch the show.