The project is being led by Professor Sir Magdi Yacoub, a renowned cardiac surgeon now in his 80s who carried out the UK’s first heart-lung transplant at Harefield Hospital in northwest London.

The reality TV star goes behind the scenes at a Dogs Trust site in Essex to learn about rehoming. Dean Russell wants people to be more aware of heart attack symptoms after surviving one in August.

Researchers at the Imperial College London and Harefield Hospital in the UK have developed a novel treatment that harnesses body's natural repair mechanisms to build a living heart valve.