John Stanley Kenneth Arnold (born 12 June 1953) is an auxiliary bishop

Auxiliary bishop

An auxiliary bishop, in the Roman Catholic Church, is an additional bishop assigned to a diocese because the diocesan bishop is unable to perform his functions, the diocese is so extensive that it requires more than one bishop to administer, or the diocese is attached to a royal or imperial office...

 of the Roman Catholic Archdiocese of Westminster. He holds the titular see

Titular see

A titular see in various churches is an episcopal see of a former diocese that no longer functions, sometimes called a "dead diocese". The ordinary or hierarch of such a see may be styled a "titular bishop", "titular metropolitan", or "titular archbishop"....

 of Lindisfarne

Lindisfarne

Lindisfarne is a tidal island off the north-east coast of England. It is also known as Holy Island and constitutes a civil parish in Northumberland...

 and is a Chaplain to the Papal Household and chairman of the Oxford and Cambridge Catholic Education Board

Oxford and Cambridge Catholic Education Board

The Oxford and Cambridge Catholic Education Board is the charitable body responsible for appointing the Catholic chaplains to the universities of Oxford and Cambridge....

.

Arnold was born in Sheffield and attended Mylnhurst Convent School before attending Grace Dieu Manor School

Grace Dieu Manor School

Grace Dieu Manor School is a preparatory school for pupils aged 3 to 13 set among of countryside. Opened in May 1933 by the Rosminians, it is a privately run Catholic school which welcomes children from all denominations and faiths. It acts as a prep school for Ratcliffe College...

 and Ratcliffe College

Ratcliffe College

Ratcliffe College is an independent Catholic boarding and day school in Leicestershire, England. The College, situated in of parkland on the Fosse Way about six miles north of Leicester, was founded on the instructions of Blessed Father Antonio Rosmini-Serbati in 1845 as a seminary. In 1847, the...

, both schools run by the Institute of Charity (Rosminians). In 1975 he graduated with a law degree from Trinity College, Oxford

Trinity College, Oxford

The College of the Holy and Undivided Trinity in the University of Oxford, of the foundation of Sir Thomas Pope , or Trinity College for short, is one of the constituent colleges of the University of Oxford in England. It stands on Broad Street, next door to Balliol College and Blackwells bookshop,...

 and completed his legal qualification by being called to the Bar in the Middle Temple

Middle Temple

The Honourable Society of the Middle Temple, commonly known as Middle Temple, is one of the four Inns of Court exclusively entitled to call their members to the English Bar as barristers; the others being the Inner Temple, Gray's Inn and Lincoln's Inn...

in 1976 after studies at the Council of Legal Education.

Arnold has responsibility for the pastoral care of the deaneries of Barnet, Brent, Enfield, Haringey and Harrow.