The Disasters Emergency Committee yesterday opened an appeal to raise money for the victims of the floods in Pakistan.
So far, more than 1,000 people have died and an estimated 2.5 million people have been affected.
The BBC, ITV, Channel 4, Five and Sky, along with independent radio stations, will run appeal broadcasts from tomorrow.
The DEC will also use social networking websites to promote the appeal.
Some committee members, including the British Red Cross and ActionAid, had opened appeals before the umbrella body announced its decision.
A DEC spokesman said money donated to individual members would remain with those charities and be used according to their own criteria.
To make a donation, call 0370 60 60 900 or visit the DEC’s website.