Lomax was born May 30, 1919, in Edinburgh. He returned there in 1945 after more than three years of interrogation and torture at the hands of the Japanese after his capture in Singapore.
Lomax later wrote of his own skepticism ahead of meeting with Nagase Takashi, who he had tracked down following his retirement in 1982.
"I strongly suspected that if I were to meet him I'd put my hands round his neck and do him in," Lomax wrote on the website of U.K.-based reconciliation charity The Forgiveness Project. "After our meeting, I felt I'd come to some kind of peace and resolution. Forgiveness is possible when someone is ready to accept forgiveness. Some time the hating has to stop."
Lomax is survived by his wife Patti, his daughter from his first marriage, Charmaine, and his step-children, Graeme, Nicholas, Mark and Jennifer.