The UK government has pledged an extra £70m to help Pakistan after last month's earthquake which killed 73,000 and left more than 3m people homeless.
The total UK aid given to Pakistan now stands at £103m
The Department for International Development said the aid was to pay for long-term reconstruction work.
The UK has already given £33m for immediate relief.
It comes after Pakistan's president, Pervez Musharraf, said his country needed at least $5.2bn (£3bn) to recover from the 8 October disaster.
It included $3.5bn for reconstruction, $1.5bn for relief and $100m for rehabilitation, he told reporters.
His comments came ahead of an international donors conference being held in the Pakistani capital Islamabad this weekend.
It is also being attended by UN Secretary General Kofi Annan and the heads of international agencies and aid groups.
Britain will be represented by international development minister Gareth Thomas.
President Musharraf has said the funds received so far from international donors has been "negligible" and he hopes to raise the money needed at the conference.
Some 1,400 people also died in Indian-administered Kashmir as a result of the earthquake.