anchor.diff:  3,Thames Ditton,E07000207,Elmbridge,DIS,E05007265,
   3,The Worthys,E07000094,Winchester,DIS,E05011007,
   3,Tiptree,E07000071,Colchester,DIS,E05010842,
  -3,Topsham,E07000053,Exeter,DIS,E05011023,
  +3,Topsham,E07000041,Exeter,DIS,E05011023,
   3,Trinity,E07000075,Rochford,DIS,E05010855,
   3,Tudor,E07000103,Watford,DIS,E05004847,
   3,Upper Meon Valley,E07000094,Winchester,DIS,E05011008,
  
positive.code: 3,Gleadless Valley,E08000019,Sheffield,MTD,E05010870,
  3,Glebe,E07000138,Lincoln,DIS,E05010789,
  3,Goldsworth Park,E07000217,Woking,DIS,E05010797,
  3,Grange,E07000087,Gloucester,DIS,E05010956,
  3,Graves Park,E08000019,Sheffield,MTD,E05010871,
  3,Great Sankey North and Whittle Hall,E06000007,Warrington,UTA,E05011032,
  3,Great Sankey South,E06000007,Warrington,UTA,E05001606,
  
negative.code: 2,Stoke Bishop,E06000023,Bristol,UTA,E05010916,
  2,West,E06000031,Peterborough,UTA,E05010825,
  2,Westbrook,E06000007,Warrington,UTA,E05001618,
  2,Westgate,E07000081,Gloucester,DIS,E05010967,
  2,Widewater,E07000223,Adur,DIS,E05007575,
  2,Windmill Hill,E06000023,Bristol,UTA,E05010918,
  3,"Adderbury, Bloxham and Bodicote",E07000177,Cherwell,DIS,E05010919,
  