Hannah Clark can no longer compete in the games

Hannah Clark, of Cynon Valley, was no longer able to take part in the games in Bath after the reversal operation.

It followed her body's rejection of her donor heart, and her own heart was able to continue working independently.

Transplant Sports Association chair Christine Evans said organisers were very pleased to ask Hannah along.

She was a bit disappointed that she wasn't allowed to compete, and I understand that. But we are very pleased to see her Christine Evans, Transplant Sports Association of Great Britain

The Mountain Ash teenager had been disappointed she was unable to take part again in the games following February's operation.

She is believed to have been the first person in the UK to have had her own heart restarted after the rejection of a donor heart, which had been in her body for 10 years.

Hannah had competed a number of times in various events in previous years.

The British Transplant Games have been running since 1978

But the games are organised for patients with transplanted organs, and because she was no longer officially a transplant patient she could not join in again.

In the meantime, Hannah has taken part in her own school sports day at Mountain Ash Comprehensive. She was away for six months after the reversal procedure at Great Ormond Street Hospital in London.

This year's games - which were for both adults and children - were held over four days at the University of Bath.

Hannah was asked to present the award for the child who had overcome most difficulties to enter the games - an honour she herself has won in the past.

"She was a bit disappointed that she wasn't allowed to compete, and I understand that," said Mrs Evans.

"But we are very pleased to see her."