The Rt Rev Thomas McMahon, Bishop Emeritus of Brentwood and the longest-serving bishop in the diocese’s history, has died at the age of 89.
The diocese announced that “The Rt Rev Thomas McMahon, Bishop Emeritus of Brentwood Diocese, died peacefully at his home in Stock at 10 am on 24 November 2025. May he rest in peace.” Funeral details are expected to be released in due course.
Bishop McMahon’s life spanned almost the entire modern history of the diocese he later led. Born in Dorking in 1936 to Irish parents, he and his identical twin brother were educated at St Bede’s College, Manchester, after their father’s work required the family to move frequently. His parents later settled in Old Harlow, marking the beginning of his long association with Brentwood.
