The DCA membership list, dated 18/3/91, shows 383 members of whom 362 reside in the UK. To see how the members are located, I have sorted them into localities using , for the most part, the traditional counties, e.g. Manchester has been counted as Lancashire. The London postal area is roughly that of the old LCC, while the outer parts of Greater London have been put back into their original counties, e.g. Middlesex. The following list gives the number of members per county, and within each number group the counties are listed alphabetically.

38 Hampshire 5 Cornwall 1 Argyll 25 Lancashire 4 Cambridgeshire Banffshire 22 London postal Clwyd Co Down 18 Essex Co Antrim Durham 16 Kent Leicestershire Dyfed 14 W Sussex N Yorkshire Grampian 13 Cheshire 3 Bedfordshire Gwynedd Middlesex Buckinghamshire Herefordshire Surrey Derbyshire Isle of Arran/Man 12 Suffolk Somerset Jersey W Yorkshire Wiltshire Lincolnshire 10 Berkshire S Yorkshire Midlothian Norfolk 2 Dumbartonshire Northamptonshire 9 Avon Fife Powys Cumbria Glamorganshire Roxburgh Devon Gloucestershire 6 Dorset 8 Hertfordshire Nottinghamshire W Midlands Oxfordshire Perthshire Worcestershire 7 E Sussex Shropshire Warwickshire Tyne & Wear

A quarter of the members are in just 3 areas: Hants, Lancs and London postal. A half are in the top 13 areas down to Norfolk. The rest are spread out more thinly.