Leeds International Festival of Ideas has announced this year's line up of speakers as it returns to the city for the fourth year.

The T-shirts, which feature the dome of the Sheffield shopping centre, are being sold for charity.

Singers Rebecca Lucy Taylor and Jake Shears will take over the lead roles from the end of September.

The star gave a unique performance with Royal Northern Sinfonia on the banks of the Tyne.

The South Yorkshire singer has been recognised for her musical success and "championing diversity".

The festival covers everything from pop music to Bollywood, alongside a strong classical line-up.

Mae Muller is added to the bill along with The Reytons, Gengahr and English Teacher.

Self Esteem, Royal Blood, and Alt-J are among the acts confirmed for the event in July.