A
AA, The
A & Z Cartography
Anglia Land Surveys Ltd
ARKA Cartographics Ltd

B
Bentley Systems
Beuster, Clarke and Associates
British Geological Survey
Brynmor Jones Library

C
Collins Bartholomew
Communicarta Ltd
Cook Hammond & Kell Limited
Cosmographics
Cyngor Cefn Gwlad Cymru
Countryside Council for Wales

D
David Lock Associates
Defence Geographic Centre
Demap

E
ESRI (UK) Ltd.
European Map Graphics Ltd.

F
FIND
Future Mapping Company

G
GB Maps Ltd
GeoEnable Limited
Geofoto
The GeoInformation Group
GeoWise
Global Mapping Ltd

H
Harvey Map Services Limited
Highways Agency

I
Imray, Laurie, Norie & Wilson
IMTA (affiliated organisation)
Incomat
Informap UK Limited
Intergraph (UK) Ltd
Isle of Man Government

J
JARIC - The National Imagery Exploitation Centre

L
Latitude Cartography Ltd
University of Leicester
Lorienne SA
Lovell Johns Limited

M
Metropolitan Police Service
ML Design

N
The National Archive
National Archives of Ireland
National Assembly for Wales
National Library for Wales
NCS Survey Ltd
Newgrove

O
Ordnance Survey of GB
Ordnance Survey of NI

P
People's Map LLP
Philip's
Phoenix Mapping
Pindar
Pine Lodge Maps
Police Service of Northern Ireland

R
Royal Commission on the Ancient and
Historical Monuments of Wales
Royal School of Military Survey

S
Scottish Natural Heritage
Sigma Seven
STAR-APIC
Steer Davies Gleave
Stirling Surveys

T
Taylor Young
The Map Shop

U
UK Hydrographic Office

V
Victoria Litho Ltd

W
Walking Distance Maps

X
The XYZ Digital Map Company