U DSD/1 Beverley and Haltemprice (later North Humberside) SDP

U DSD/2 Yorkshire and Humberside Area SDP

U DSD/3 Local newsletters

U DSD/4 National material

U DSD/5 Printed/published material

U DSD/6 Miscellaneous additional material

U DSD2/1 Local material, 1981 - 1990

U DSD2/2 National material, 1982 - 1988

U DSD2/3 Social Democratic Party library and publications, 1982 - 1986