The Spice Girls are set to headline Nelson Mandela's 90th birthday concert this summer.

The former South African President is keen for the 90s girl band - who announced they will split again after their comeback world tour finishes this month - to perform one last time at the milestone event at London's Hyde Park in June.

Annie Lennox says she felt like a fraud accepting an honorary degree.

The Scottish-born singer, 51, was given the degree by the Royal Scottish Academy of Music and Drama.