anchor.diff:  1,Yateley East,E07000089,Hart,DIS,E05009361,
   1,Yateley West,E07000089,Hart,DIS,E05009362,
   1,Yaxley and Farcet,E07000011,Huntingdonshire,DIS,E05002790,
  +1,St Ives South,E07000011,Huntingdonshire,DIS,E05008580,
  +1,Little Paxton,E07000011,Huntingdonshire,DIS,E05008579,
   1,Yew Tree,E08000012,Liverpool,MTD,E05000915,
   1,Yewdale,E07000028,Carlisle,DIS,E05003179,
   2,"Randwick, Whiteshill and Ruscombe",E07000082,Stroud,DIS,E05010982,
  
positive.code: 3,Welwyn East,E07000241,Welwyn Hatfield,DIS,E05004865,
  3,Welwyn West,E07000241,Welwyn Hatfield,DIS,E05004866,
  3,Werrington,E06000031,Peterborough,UTA,E05010824,
  3,West Byfleet,E07000217,Woking,DIS,E05007456,
  3,West Ecclesfield,E08000019,Sheffield,MTD,E05010883,
  3,Westbury-on-Trym and Henleaze,E06000023,Bristol,UTA,E05010917,
  3,Weybridge Riverside,E07000207,Elmbridge,DIS,E05011088,
  
negative.code: 1,Chineham,E07000084,Basingstoke and Deane,DIS,E05004438,
  1,Chipping Norton,E07000181,West Oxfordshire,DIS,E05006637,
  1,Chirton,E08000022,North Tyneside,MTD,E05001118,
  1,Chopwell and Rowlands Gill,E08000037,Gateshead,MTD,E05009313,
  1,Chorley East,E07000118,Chorley,DIS,E05005169,
  1,Chorley North East,E07000118,Chorley,DIS,E05005170,
  