Britain gave £1.3billion in foreign aid to help people in the 20 most corrupt countries in the world in 2015, research claims.

Analysis of an annual index of global corruption compiled by the respected organisation Transparency International has shown the UK's spending on corrupt countries has increased from just over £1 billion last year.

Aid rose by more than 50 per cent in Afghanistan to £300 million and by 11 per cent in Nigeria to £263 million.