Supermodel Naomi Campbell has told ITV News she will treasure Nelson Mandela's memory in her heart "for the rest of her life", as she attended a memorial service for the former South African president.

She told ITV News:

It's been an amazing service and everyone has come together. Only Mr Mandela, Madiba, Tata, could bring everyone together like this. I got to know him for 20 years and it's an honour and a blessing and I'm truly in awe and will always be eternally grateful. Sharing, forgiving and a lot of things. he means a lot to me and I have a lot of wonderful memories...He is someone that I will treasure in my heart for the rest of my life. It's about celebrating his life, we feel sad and grieve but it's not all I think he would want. He wants us to celebrate his life and his legacy.

She has previously referred to Mandela as her "honorary grandfather" and spoken about how he helped her in her personal life.

Singer Bono said that his thoughts were with the family and told ITV News he was honoured to be asked to attend:

The memorial to Mandela saw many celebrities from around the world gather including South African actress Charlize Theron.

Charlize Theron during Nelson Mandela National Memorial Service. Credit: Sydney Mahlangu/Sports Inc/Press Association Images