Cuthbert married Muriel Olive Mason. They had ten children.
After leaving the RAF in 1948, Cuthbert studied at the University of Nottingham. He received a degree in law and economics and then worked for a major chemical company.
Cuthbert helped establish Deseret Enterprises, an agency that directed the distribution of materials for the LDS Church in Britain and on the European continent. In 1961, he became the first president of the church's LeicesterStake.[2] He also served as the first president of the Birmingham England Stake when it was organized in 1969. He was then called as a regional representative. While serving in this position, Cuthbert was one of the planners for the 1971 Manchester Area Conference.[1]