The partial impact assessment accompanying the August 2007 consultation on the implementation of the nitrates directive in England estimated the number of farms in the NVZ in each region of the UK on the basis of the 2005 agricultural census.
Number North East 1,078 North West 15,144 Yorkshire and the Humber 14,980 East Midlands 20,431 West Midlands 20,350 Eastern 22,777 South East 20,328 South West 24,514 Total 139,601
Details of the size and location of each farm could be provided only at disproportionate cost.