Leona Lewis found performing at Nelson Mandela's 90th birthday tribute concert in London last night so emotional she was reduced to tears.

The singer joined an all-star line-up, including Amy Winehouse and Razorlight, at the concert in Hyde Park - and says it was a particular honour for her after being brought up with stories of the former South African president's heroism.

Lewis belted out singles Bleeding Love and Better in Time, and confessed, "It was a really emotional moment for me.

"There were definitely a few tears. My auntie and grandmother would tell me stories about Nelson Mandela. I never dreamed I would be up there singing at his birthday celebration. It was very emotional performing for him."