Charity workers at Diana service

Ms Goodall described the princess as a "very, very warm" person

Representatives from Princess Diana's favourite charities are in London to attend the memorial service to mark her life and work 10 years after her death.

Special prayers will also be said at Llandaff cathedral in Cardiff at 1800 BST to mark the anniversary of the fatal car crash in Paris.

Jill Roberts represented cancer charity Tenovus at Princess Diana's funeral at Westminster Abbey.

"It was remarkable, a part of history being made," she said.

"It was such a momentous occasion obviously and when the coffin came in with the lilies then you could almost touch the emotion in the abbey.

Tenovus

"There was a lot of emotion coming from the people reading the lessons but it all came to a head when Earl Spencer got up and riveted the whole of London, the whole of the UK and the whole world I guess," Mrs Roberts added.

"It was not what you expected. It was an extremely bold speech, an extremely emotional speech as well.

After the speech, the applause came according to Mrs Roberts.

"You heard the applause coming through the walls of the abbey like a wave and then you just started clapping as well."

Mrs Roberts was a campaign director for Tenovus and was working with the charity when Princess Diana signed a giant pink ribbon for them.

She's well beloved in Wales and anybody who had met her would know that she was very human, very warm and just the right person. It made a big difference Suzanne Goodall, Ty Hafan founder

She described the day of the 36-year-old princess' funeral as "remarkable, a part of history being made, it was a privilege.

"But I rather she was still alive."

Princess Diana was killed in a car crash in Paris on 31 August 1997 with her companion Dodi Fayed and driver and chauffeur Henri Paul, when the Mercedes they were in crashed in the Pont de l'Alma tunnel.

Two years before her death, Princess Diana persuaded opera star, Pavarotti to perform in a gala concert to raise money for the Ty Hafan children's hospice in Sully near Penarth.

Princess Diana was patron of Ty Hafan from March 1995 until she relinquished her role in 1996 after her divorce. But she remained close to the charity until her death.

It's founder, Suzanne Goodall said her support and patronage was invaluable.

"She's well beloved in Wales and anybody who had met her would know that she was very human, very warm and just the right person. It made a big difference," Ms Goodall said.