Adlard and Jones, publishers, London

• Corporate body

ADM Milling

• Corporate body

Advance, postcard publishers

• Corporate body

Advertiser Officer, postcard publishers, Pontefract

• Corporate body

Aerofilms Ltd, Hendon

• Corporate body

Albury Mill

• Corporate body

Alexander Hutcheson and Son, postcard publishers

• Corporate body

Alexanders

• Corporate body

Allen and Page

• Corporate body

Allied Bakeries

• Corporate body

Allied Grain

• Corporate body

Allied Mills

• Corporate body

Amos and Amos, postcard publishers, Dover

• Corporate body

Analysis Ltd

• Corporate body

Ancient Monuments Society

• Corporate body

Anthony Steel and Owen, architects

• Corporate body

Appleby-Frodingham News

• Corporate body

Appleton, French, and Scrafton Limited, milling co-operative

• Corporate body

Architectural and Archaeological Society for the County of Buckingham

• Corporate body

Argall's Series, postcard publishers

• Corporate body