Northamptonshire

NN1 to NN18 and NN29

Buckinghamshire

MK1 to MK16 and MK19, MK40 to MK44 and MK46

Cambridgeshire

PE1 to PE6, PE7 to PE9, PE19, PE26 to PE29

Warwickshire

CV21 and CV22

Leicestershire

LE16