Identical twins Billy and Ian McCook have spent more than 50 years donating blood and may have saved thousands of sick babies, children and adults.
The heroic duo are two of the country’s top blood donors, after rolling up their sleeves to give a staggering 503 pints between them.
At 71 the pair who share the same blood group had to wait in a two-hour queue to give their first pints in 1969.
