Faizan is waiting for a third kidney transplant after being born with renal failure.
Primrose's mother and sister have already received kidney transplants. Now she is on the waiting list too.
Ruban, 27, from Croydon is waiting for a second kidney transplant having been born with chronic renal failure.
Jim had a meningitis virus infection in his heart as a child, and has now had two heart pumps fitted while waiting for a heart transplant.