The Nottinghamshire survey was funded by Nottinghamshire County Council in 1997–9 and carried out by Trent and Peak Archaeological Unit. The remainder of the survey formed part of Trent Valley GeoArchaeology's 'Trent Valley 2002' project, funded by the Aggregates Levy Sustainability Fund through DEFRA and English Heritage, and carried out during 2003. The preparation and publication of this report was made possible by grants from Trent Valley GeoArchaeology and English Heritage.
Thanks are due to Steve Malone, for permission to use the unpublished Nottinghamshire survey data; the subsequent project methodology owes much to this work (Malone 1998). Thanks also to Jim Williams, David Knight and Andy Howard for comments on drafts of this paper, and to Keith Challis, Mike Bishop, Dr Jonathan Last (English Heritage) and the archaeological officers of Derbyshire, Leicestershire, Lincolnshire, North Lincolnshire, Nottinghamshire and Staffordshire County Councils, for their assistance.