Ian Mackay, son of John Mackay was born in 1920. After leaving high school in 1936, he entered the business undergoing his apprenticeship as a Letterpress Machinist. He left later that year to serve in the army during the Second World War. After being wounded, Ian spent time in hospital and later returned to help his father in the business. By this time Mr Clark had passed away and Mr John Mackay was in sole charge until 1957 when he too died.
Some years later, Ian looked towards the future for his sons and had a new printing factory built in West End. All existing machinery was moved there, and soon after the entire factory was air conditioned. Ian was later responsible for this factory trebling in size. Ian has since passed away, however Clark & Mackay continue to hold onto a few of his loyal clients