anchor.diff:  3,Southwick and Wickham,E07000094,Winchester,DIS,E05011006,
   3,St Anne's and St John's,E07000071,Colchester,DIS,E05010839,
   3,St Barnabas,E07000094,Winchester,DIS,E05011001,
  -3,St David's,E07000050,Exeter,DIS,E05011020,
  +3,St David's,E07000041,Exeter,DIS,E05011020,
   3,St Gabriels,E08000011,Knowsley,MTD,E05010944,
   3,St John's,E07000217,Woking,DIS,E05010804,
  -3,St Loyes,E07000051,Exeter,DIS,E05011021,
  +3,St Loyes,E07000041,Exeter,DIS,E05011021,
   3,St Luke,E07000094,Winchester,DIS,E05011003,
   3,St Michael,E07000094,Winchester,DIS,E05011004,
   3,St Michaels,E08000011,Knowsley,MTD,E05010945,
   3,St Paul,E07000094,Winchester,DIS,E05011005,
  -3,St Thomas,E07000052,Exeter,DIS,E05011022,
  +3,St Thomas,E07000041,Exeter,DIS,E05011022,
   3,Stanborough,E07000103,Watford,DIS,E05004846,
   3,Stanground South,E06000031,Peterborough,UTA,E05010823,
   3,Stannington,E08000019,Sheffield,MTD,E05010880,
  
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,"Randwick, Whiteshill and Ruscombe",E07000082,Stroud,DIS,E05010982,
  2,Abbeydale,E07000081,Gloucester,DIS,E05010950,
  2,Alresford and Itchen Valley,E07000094,Winchester,DIS,E05010995,
  2,Barnwood,E07000081,Gloucester,DIS,E05010952,
  2,Barton and Tredworth,E07000081,Gloucester,DIS,E05010953,
  2,Bedminster,E06000023,Bristol,UTA,E05010887,
  2,Bishopston and Ashley Down,E06000023,Bristol,UTA,E05010888,
  2,Bishopsworth,E06000023,Bristol,UTA,E05010889,
  