Northamptonshire

NN12 – Silverstone
NN13 – Brackley, Evenley, Halse, Westbury, Turweston, Greatworth, Helmdon, Syresham, Mixbury, Croughton, Hinton-in-the-Hedges, Farthinghoe

Oxfordshire

OX15 – Deddington, Bloxham, Adderbury, Bodicote
OX16 – Banbury, Hardwick, Easington, Hanwell Fields, Grimsbury
OX17 – Aynho, Kings Sutton, Middleton Cheney, Chacombe, Charlton, Farthinghoe
OX25 – Ardley, Fritwell, Fewcott, Stoke Lyne, Somerton, Graven Hill
OX26 – Bicester, Launton, Chesterton, Southwold, Glory Farm
OX27 – Fringford, Caversfield, Stratton Audley, Hethe, Poundon, Godington

Buckinghamshire

MK18 – Buckingham, Gawcott, Padbury, Thornborough, Akeley, Tingewick, Finmere, Leckhampstead, Chackmore, Dadford, Barton Hartshorn, Nash, Water Stratford