A television advert starring two children from a dance school in Watford has aired for the first time.

Joanna Standring from Rickmansworth and Joe Broadis from Chorleywood, who are both nine, dance in a commercial for mascots for the London 2012 Olympic Games.

Claire Greenwood, who teaches the youngsters at Rise Studios, said: "For them to see themselves on TV is amazing.

"They will be able to keep the video and look back at it.

"I feel very proud as a teacher."

The pair filmed the advert in September after being chosen from a round of auditions.

Another student at the school, Arabelle Hui, was also selected to film an advert, which was aired earlier this year.

Ms Greenwood added: "They have had to wait such a long time to see it.

"It was such a great experience for them."