Prime Minister David Cameron says Britain will provide another STG30 million ($A52 million) in relief to the Philippines.
"Today I can announce that we are providing a further 30 million pounds to support the United Nations and Red Cross emergency appeal" to help survivors of Typhoon Haiyan, he told reporters.
"We are also deploying an RAF C-130 aircraft to help ensure that aid workers move between worst affected areas and get the aid to those who need it most," Cameron added while attending a Commonwealth summit in Sri Lanka.
Cameron said Britain had already pledged STG23 million ($A39.86 million) to help the relief effort but said it was clear more aid was needed after "watching appalling scenes of mass destruction".
"The huge scale of the disaster is now becoming clearer every day," he said.
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"They are going to need sustained help from the international community."
Britain also has sent the helicopter carrier HMS Illustrious to help the relief effort after the November 8 typhoon.
Authorities in the Philippines have put the official death toll at 3,633, with 1,179 people missing and nearly 12,500 injured.
The UN has put the number of dead at 4,460 and said Saturday that 2.5 million people still "urgently" required food assistance.
