[8] In 1952, Ingram married Rosemary Clara Cuningham, who had also attended Canterbury University College and graduated with a Bachelor of Arts degree in 1949.
[1][4] In 1952, Ingram and his family moved to Melbourne, Australia, where he worked for engineers Boving and Company, and rose to become managing director in 1954.
[4] He returned to New Zealand in 1962 to take up the role of chief engineer at Cable Price Corporation, and three months later he became to company's managing director.
[14] In the 1984 New Year Honours, Ingram was appointed a Commander of the Order of the British Empire, for services to manufacturing and the engineering profession.
[15] In 1990, he was awarded the New Zealand 1990 Commemoration Medal,[1] and in the 1994 New Year Honours he was appointed a Knight Bachelor, for services to engineering and business management.