The Pakistan floods appeal has now raised £35m, making it the joint sixth most successful campaign by the Disasters Emergency Committee in its 45-year history.
Deputy Prime Minister Nick Clegg revealed the figure during a visit to the DEC’s Euston offices in London yesterday.
The 2004 tsunami earthquake appeal is by some distance the most successful DEC appeal, raising £390m.
This year’s Haiti earthquake appeal generated £101m; the 2005 Asia quake appeal yielded £59m; the Kosovo crisis appeal in 1999 attracted £53m and the Rwanda emergency appeal in 1994 raised £37m.
The £35m donated for Pakistan, where 1,500 people have died and 17m have been affected by the floods, is equal to the amount pledged to the Sudan emergency appeal in 2004.
The Pakistan appeal is currently receiving about £1m a day.
Brendan Gormley, chief executive of the DEC, said: "Our members and their partners have reached 800,000 people so far, but millions still need help."
The DEC is an umbrella body for 13 aid agencies, including Oxfam, Save the Children and the British Red Cross.