The Disaster Emergency Committee’s Pakistan Floods Appeal has become the first coalition campaign to raise more money in the second week than in the opening seven days.
By contrast, donations to the DEC’s Haiti Earthquake Appeal and Tsunami Appeal fell at the same stage by 28 per cent and 24 per cent respectively.
The total raised by the appeal stands at £29m.
Brendan Gormley, chief executive of the DEC, said: "It is sometimes harder to fully appreciate the impact of disasters such as floods that take longer to develop.
"However, the response of UK public to the floods in Pakistan has been extraordinary. We have never seen anything like it in our 45-year history."
The floods have killed 1,600 people and have affected an estimated 20 million more.