ALDERSHOT CORPORATION 
BEDFORD R.D.C. 
BIRMINGHAM CORPORATION 
BLACKPOOL CORPORATION 
BOROUGH OF BARNET LONDON 
BRADFORD CORPORATION 
BRISTOL CORPORATION 
CORPORATION OF BOLTON 
Corporation of Sheffield 
CUAG 
E.E.B. 
EASTERN ELECTRICITY BOARD 
EASTERN GAS BOARD 
EAST MIDLANS ELECTRICITY BOARD 
EAST MIDLANS GAS BOARD 
EEBC 
ELECTRICITY BOARD MERSEYSIDE & N. WALES 
H.C. 
H.E.B.D.A. 
HUDDERSFIELD CORPORATION 
LBB 
LONDON BOROUGH WALTHAM FOREST 
LONDON ELECTRICITY BOARD 
Legal & General Assurance Society. Ltd. 
M.W.B. 
MERSEYSIDE L. N. WALES ELECTRICITY BOARD 
MIDLANDS ELECTRICITY BOARD 
N.G.B. 
NEWS OF THE WORLD 
NORTH WESTERN ELECTRICITY BOARD 
NORTH WESTERN GAS BOARD 
NTGB 
PORTSMOUTH CORPORATION 
ROCHDALE CORPORATION 
SCOTISH GAS BOARD 
SEEB 
S. B. of I. LONDON 
SOLIHULL C.B.C. 
SOUTHAMPTON CORPORATION 
SOUTHERN ELECTRICITY 
SOUTHERN ELECTRICITY BOARD 
SOUTHERN GAS BOARD 
SOUTH OF SCOTLAND ELECTRICITY BOARD 
SOUTH WALES ELECTRICITY BOARD 
ST HELENS CORPORATION 
THE NORTH EASTERN ELECTRICITY BOARD 
THE PRUDENTIAL ASSCE.CO.. LCD 
WALES GAS BOARD 
W-S-M CORPN. 
WANDSWORTH CORPORATION 
WESTBROMWICH CORPORATION 
WNGB 
YORKSHIRE ELECTRICITY BOARD 
EASTERN ??? BOARD 
HARROGATE CORPORATION ??? 
??? CORPORATION 
??? CORPORATION 
??? U.D.C. 
???