Music festivals fail to reflect the diversity of the UK music scene, with headline slots being dominated by a small band of male rock acts over the decades, a study suggests.

Some eight out of 10 top slots were occupied by all-male acts, analysis of more than 600 headline appearances across 14 major festivals found.

And a quarter of all headline slots were taken up by the same 20 acts.

The study comes as 175,000 people head to the Glastonbury Festival.  More