Elder Karl D. Hirst was sustained as a General Authority Seventy at the April 2024 general conference. At the time of his call, he and his wife, Claire, had been serving as FSY session directors.
Elder Hirst was a full-time missionary in the England London South Mission. He was born in Bury, Lancashire, in the United Kingdom, and married Claire Elizabeth Wright in 1993. They are the parents of six children and have four grandchildren, with another soon to arrive.