He was the son of Walter Pritchett of Cowley Hall. He studied at the University of Oxford from 1622, graduating M.A. in 1629. He was collated to the joint rectory of St Andrew Undershaft-St Mary Axe in 1641, but was sequestrated during the First English Civil War. Under the Commonwealth he had a living at Harlington, Middlesex, but was replaced in 1658. He also held the curacy of the church at Harefield, Middlesex, but was removed from that position in favour of a Mr. Hoare.
After the Restoration, he returned to his position at St Andrew Undershaft. He was appointed vicar of St Giles Cripplegate in 1663, successor to John Dolben. He avoided the Great Plague of London in 1665 by moving to the country.
He died on his estate at Harefield on January 1, 1681, and was buried under the pulpit of Harefield Church. He left to St Giles Cripplegate a communion flagon that still belongs to the church.
- Also Pritchet, Prichet, Prichard.
- Bolton, Diane K.; King, H.P.F.; Wyld, Gillian; Yaxley, D.C. (1971), "Hillingdon, including Uxbridge: Manors and other estates", in Baker, T.F.T.; Cockburn editor3-first=R.B., J.S.; Pugh, A History of the County of Middlesex, Volume 4, Harmondsworth, Hayes, Norwood With Southall, Hillingdon With Uxbridge, Ickenham, Northolt, Perivale, Ruislip, Edgware, Harrow With Pinner, London: Victoria County History, pp. 69–75, notes 19
- Daniel Lysons, An historical account of those parishes in the county of Middlesex, which are not described in the Environs of London (1800), p. 118.
- William Miller, Before the Fire of London (1867), p. 82.
- Reynolds, Susan, ed. (1962), "Harlington: Churches", A History of the County of Middlesex, Volume 3, Shepperton, Staines, Stanwell, Sunbury, Teddington, Heston and Isleworth, Twickenham, Cowley, Cranford, West Drayton, Greenford, Hanwell, Harefield and Harlington, London: Victoria County History, pp. 270–273
- Reynolds 1962, "Harefield: Church", pp. 252-256.
- William Denton, Records of St. Giles' Cripplegate (1883), p. 68.
- Grosart, Alexander Balloch (1886). "Billingsley, Nicholas". In Stephen, Leslie. Dictionary of National Biography. 5. London: Smith, Elder & Co. pp. 36–27.
- "History of St Giles'". stgilesnewsite.co.uk. Retrieved 15 May 2017.
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