Five and a half thousand people in the UK are waiting for a kidney transplant and one person dies every day waiting for a match.
Today is World Kidney Day, and it's also ten years since people were given permission to donate to a total stranger.
Sally Simmonds has been finding out why people want to undergo surgery to help others, and whether it's made a difference to the thousands of desperate people on the waiting list.
Portsmouth Hospitals NHS Trust has seen an 11% increase in the number of life-saving kidney transplants carried out in the last year.
Figures published today show the renal team at Queen Alexandra Hospital performed 87 kidney transplants between 1 April 2013 and 31 March 2014 – up from 78 last year.
The Organ Donation and Transplantation Activity Report 2013/14 also shows the number of people waiting for a transplant in the Portsmouth area decreased from 235 in 2012/13 to 228 in 2013/14.
Despite the rises in the number of people benefiting from a transplant, around 3 people die each day across the UK due to a shortage of organs.
This week’s National Transplant Week has the slogan ‘Spell It Out’, which urges us all to tell those closest to us whether we want to be an organ donor.
Nicholas Crace has become the oldest living kidney donor in British medical history AND the oldest person in the country to donate a kidney to a stranger.
He's been telling ITV Meridian why he chose to go through with the three hour operation. He may be 83 - but his kidneys function as well as someone in their 40s.
He's 83 and the oldest living kidney donor in the UK. Nicholas Crace from Overton in Hampshire, says he couldn't give up the chance to save someone's life.
An 83-year-old man has achieved a double first by becoming the oldest living kidney donor in the UK and the oldest person in the country to give a kidney to a stranger. Nicholas Crace is a former charity director from Overton, Hampshire.
A Sussex man who desperately needs a kidney transplant has launched a Facebook appeal that he hopes will raise awareness of the shortage of donors.
'Please help Nathanael find a kidney' has already had more than 1700 views since it was launched by 28 year old Nathanael Adams.