Aid to developing countries will "plummet" after 2017 due to Gordon Brown's flagship International Finance Facility, the World Development Movement will say today. The IFF, the centrepiece of Mr Brown's "Marshall plan for Africa", would allow governments to borrow on capital markets, bringing forward future aid flows to be spent in the decade to 2017.

Research by the WDM, a campaign group, suggests the IFF would increase aid flows by $209bn (£109bn) in real terms up to 2017 but that flows would fall steeply thereafter as aid budgets were used to repay the bonds at a cost of $316bn in real terms.