Martin Wallace has ministered over 40 years in industrial Sheffield, suburban Surrey, East London and remote villages in Essex. He was Archdeacon of Colchester before becoming Bishop of Selby in the Diocese of York in 2003. Along the way he was Chaplain to a 7th Century Celtic Chapel at Bradwell-On-Sea in Essex and is the author of The Celtic Resource Book and the compiler of Pocket Celtic Prayers. He has written other books on Christian healing, urban prayers and local history.