Teenage girls forced into sex by London gangs, BBC finds

The BBC has uncovered new evidence that vulnerable girls and young women in London are being groomed by gangs to carry drugs and have sex. We discuss the findings with the former head of the National Crime Agency's Child Exploitation Command.

Also on the programme: the day after the US State Department approved the UK's Chagos Islands deal, President Trump launches a new attack on it.

And the symphonic sounds hidden in the freezer aisle of a Sheffield supermarket.