WThe BA postcode area, also known as the Bath postcode area, is a group of nineteen postcode districts in South West England, within sixteen post towns. These cover east Somerset and west Wiltshire, plus a very small part of north-west Dorset.
WThe BH postcode area, also known as the Bournemouth postcode area, is a group of 26 postcode districts in southern England, within eleven post towns. These cover east Dorset and part of south-west Hampshire.
WThe BS postcode area, also known as the Bristol postcode area, is a group of 37 postcode districts in South West England, within eight post towns. These cover the city of Bristol, north Somerset and south Gloucestershire.
WThe DT postcode area, also known as the Dorchester postcode area, is a group of eleven postcode districts in South West England, within nine post towns. These cover much of Dorset, plus very small parts of Devon and Somerset.
WThe EX postcode area, also known as the Exeter postcode area, is a group of 33 postcode districts in South West England, within 30 post towns. These cover north and east Devon, plus the northernmost part of Cornwall and a very small part of Somerset.
WThe GL postcode area, also known as the Gloucester postcode area, is a group of 26 postcode districts covering 28 post towns: Badminton, Berkeley, Blakeney, Cheltenham, Chipping Campden, Cinderford, Cirencester, Coleford, Drybrook, Dursley, Dymock, Fairford, Gloucester, Lechlade, Longhope, Lydbrook, Lydney, Mitcheldean, Moreton-in-Marsh, Newent, Newnham, Ruardean, Stonehouse, Stroud, Tetbury, Tewkesbury, Westbury-on-Severn and Wotton-under-Edge. The main series has a hiatus after GL20, resuming at GL50 for Cheltenham and areas immediately around and to its east, ceasing with GL56.
WThe NP postcode area, also known as the Newport postcode area, is a group of eighteen postcode districts, which are subdivisions of fourteen post towns. These cover south-east Wales, including Newport, Pontypool, Abergavenny, Monmouth, Chepstow, Abertillery, Usk, Tredegar, New Tredegar, Ebbw Vale, Crickhowell, Blackwood, Caldicot and Cwmbran, plus a small part of the English counties of Gloucestershire and Herefordshire.
WThe PL postcode area, also known as the Plymouth postcode area, is a group of 35 postcode districts in South West England, within 25 post towns. These cover west Devon and east Cornwall.
WThe SN postcode area, also known as the Swindon postcode area, is a group of eighteen postcode districts in England, within ten post towns. These cover north Wiltshire, plus a small part of south-west Oxfordshire and a very small part of Gloucestershire.
WThe SP postcode area, also known as the Salisbury postcode area, is a group of eleven postcode districts in southern England, within six post towns. These cover south Wiltshire and parts of north Dorset and west Hampshire.
WThe TA postcode area, also known as the Taunton postcode area, is a group of 24 postcode districts in South West England, within 19 post towns. These cover western Somerset, plus very small parts of Dorset and Devon.
WThe TQ postcode area, also known as the Torquay postcode area, is a group of fourteen postcode districts in South West England, within eleven post towns. These cover much of south Devon, including Torquay, Paignton, Newton Abbot, Brixham, Ashburton, Buckfastleigh, Dartmouth, Kingsbridge, Salcombe, South Brent, Teignmouth and Totnes.
WThe TR postcode area, also known as the Truro postcode area, is a group of 27 postcode districts in South West England, within 15 post towns. These cover west Cornwall, including Truro, Penzance, Camborne, Falmouth, Hayle, Helston, Marazion, Newquay, Penryn, Perranporth, Redruth, St Agnes, St Columb and St Ives, plus the Isles of Scilly.