Finchley Arrow
Friern Barnet & District Local History Society
Hampstead Garden Suburb Institute
Hornsey Historical Society
Islington Archaeology and Historical Society
London Borough of Barnet
Middlesex Heraldry Society
Pinner Chalk Mines
Pinner Local History Society
Ruislip, Northwood and Eastcote Local History Society
St Albans & Hertfordshire Architectural & Archaeological Society (SAHAAS)
Stanmore & Harrow Historical Society
Wembley History Society
Willesden Local History Society
The British Museum
City of London Archaeological Society
Enfield Archaeological Society
Greater London Industrial Archaeology Society
Institute of Archaeology (UCL)
London Archaeologist
London & Middlesex Archaeological Society
London Archaeological Archive & Research Centre (LAARC)
London Underground Railway Society
Museum of London
Petrie Museum
The London Society
Victoria and Albert Museum