| East Anglia | Cambridgeshire, Norfolk, Suffolk |
| Home Counties | Bedfordshire, Buckinghamshire, Essex, Hertfordshire |
| London & South East | Kent, London, Middlesex, Sussex |
| Midlands-East | Derbyshire, Leicestershire, Lincolnshire, Northamptonshire, Nottinghamshire |
| Midlands-West | Gloucestershire, Herefordshire, Shropshire, Staffordshire, Warwickshire, West Midlands, Worcestershire |
| North East | Durham, Humberside, Northumbria, Yorkshire |
| North West | Cheshire, Cumbria, Lancashire, Greater Manchester, Merseyside |
| Scotland | Includes all Scottish counties initially |
| South West | Bristol, Cornwall, Devon, Somerset, Wiltshire |
| Thames Valley & South | Berkshire, Dorset, Hampshire, Oxfordshire, Surrey |
| Wales-Mid | Dyfed, Powys |
| Wales-North | Clwyd, Gwynedd |
| Wales-South | Glamorganshire, Gwent, Monmouthshire |