They both work as binmen in Buckinghamshire and they share a very special brotherly bond. But, that bond has become even stronger for David and Gary Cato - after Gary agreed to donate his kidney to help his big brother.
David has suffered with serious kidney problems since he was two - and its slowly got worse. Heather Edwards reports.
More top news
12 years in prison for smuggling 8 kilos of cocaine and 7 kilos of heroin
Friday Evening's Pollen Forecast
Young sufferers of Duchenne muscular dystrophy will now have to wait months to find out if Translarna will be available to them on the NHS.