Campaigners say 15% cut, which is smaller than had been feared, is serious setback in efforts to combat the diseases

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The UK has cut by 15% its contribution to a leading aid fund combating preventable diseases, a decision that charities have said could lead to hundreds of thousands more otherwise preventable deaths.

The UK will commit £850m to the Global Fund to Fight Aids, Tuberculosis and Malaria over 2027-29, against the £1bn pledged by the Conservative government for the last funding round.

While the sum, announced in a written government statement, is slightly higher than the figure of £800m previously being discussed by senior officials, aid groups called it a serious setback in global efforts to combat the diseases.