Sue Perkins could end up with a soggy bottom of her own after taking on an epic journey up the Mekong River for a new documentary.

The Great British Bake Off host will travel almost 3,000 miles through Vietnam, Cambodia, Laos and China towards the river’s source in a Himalayan glacier in a new BBC2 show, The Mekong River.

It comes immediately after the announcement that will present a daytime chat show on ITV with her Bake Off co-host Mel Giedroyc.

The comic duo, who met at university in Cambridge, got their big break when they appeared on French And Saunders and have hosted TV and radio shows as a duo and separately.

They have appeared with Mary Berry and Paul Hollywood on The Great British Bake Off since its launch in 2010.

BBC2 boss Kim Shillinglaw also announced a new series, A Black History Of Britain, which she said would be ‘a very different take on British history’.

The six-part show, presented by documentary-maker David Olusoga, will examine the lives of black Britons going back to the days of the Roman Empire.