He married Sylvia in 1969, and migrated with her to Toronto, Ontario, Canada, on a landed immigrant scheme. There he started working at the Royal Ontario Museum as technician, working for Doug Tushingham who helped fund Pryor's first project in the United Kingdom. This was at North Elmham in Norfolk, and the excavation was directed by Peter Wade-Martins, who exposed Pryor to the benefit of opening large-area excavations.
Pryor returned to the UK in 1970, where the construction of the new town at Peterborough offered the opportunity to do large scale archaeology ahead of the planned development work. Between 1970 and 1978, he alternated between digs in the UK and writing up the excavation reports and giving presentations on his work in Canada. Pryor and his first wife were divorced in 1977, and during the course of these projects, he met his second wife, Maisie Taylor, an expert in prehistoric wood who later also appeared on Time Team; they worked together on the series of projects in the Peterborough area, the most famous of which is Flag Fen. He has a daughter, Amy, from his first marriage. He was a founding member of the Institute of Field Archaeologists in 1982.
In 1991, he published his first book about Flag Fen, entitled Flag Fen: Prehistoric Fenland Centre, for a series co-produced by English Heritage and B.T. Batsford. The final monograph on the site – entitled The Flag Fen Basin: Archaeology and environment of a Fenland Landscape – was published in 2001 as an English Heritage Archaeological Report. Pryor followed this with a third book on the site, published by Tempus in 2005; entitled Flag Fen: Life and Death of a Prehistoric Landscape, it represented what he considered to be a "major revision" of his 1991 work, for instance rejecting the earlier "lake village" concept.[5]
Pryor was awarded an MBE "for services to tourism" in the 1999 Queen's Birthday Honours.[6]
Since his retirement from archaeology, Pryor has devoted his time to sheep farming, being the owner of 40 acres of fenland pasture in Lincolnshire. In an interview with the Financial Times, he asserted that through this vocation, he felt a connection with the people of Bronze Age Britain, who also lived off this form of subsistence, before also expressing his opinion that human overpopulation represented a significant threat to the human species, urging people to have fewer children and eat less meat.[7]
^PRYOR, Francis Manning Marlborough', Who's Who 2012, A & C Black, 2012; online edn, Oxford University Press, Dec 2011; online edn, Nov 2011 accessed 13 Jan 2012