Neville's activities during the years immediately after 1207 are unknown, owing to the lack of royal records, but in December 1213 he was given custody of the Great Seal of the kingdom. He was Dean of Lichfield by 11 April 1214, at which time he held a prebend in the diocese of London. Neville was appointed to the royal chancery in about 1214, largely through the patronage of Peter des Roches, the Bishop of Winchester and one of the king's favourites. From March to October 1214, Neville was in France with the king. After the king returned to England after 1214, Neville remained in royal service until at least May 1216, although without custody of the Great Seal. His activities during the final period of John's reign prior to the king's sudden death in October 1216 are unknown.