Rich, from Bridgnorth, Shropshire, ended up in a coma when his liver failed for unknown reasons.
Adam spent three years on dialysis before getting his transplant in March 2013.
Emma is back to work teaching after having a liver transplant.
Joyce's scarring on the lungs left her needing a lung transplant.
Eleven-year-old Rhys nearly died when he suffered a heart attack while suffering from cardiomyopathy.