Vanessa - lung transplant

Vanessa, from Twickenham in London, had a pioneering lung transplant in 2013, after doctors had to figure out a way to shrink her heart.

She'd been diagnosed with Pulmonary Hypertension in January 2005, which had left her heart and lungs struggling for oxygen.

Vanessa said: "Organ donation is the greatest gift that you can give someone. I spent Christmas 2013 in hospital but spent Christmas 2014 with my family and friends - that was all thanks to my organ donor."