Media playback is unsupported on your device

Melinda Gates on contraception funding

11 July 2012 Last updated at 14:55 BST

The government says it will provide around £1.3bn over eight years to pay for family planning services in the world's poorest countries.

Ministers say the increase in aid will save a woman's life every two hours.

The pledge is being announced at a conference in London organised by Bill Gates's charity foundation and the Department for International Development, his wife Melinda said the money was vital.