Comprises: CRD 4/16/132 - Monitoring file on SDP activities, including some Labour Party press releases [file maintained by David Nicholson, CRD desk officer], 1981-1982; CRD 4/16/133 - Monitoring file on SDP activities [file maintained by David Nicholson, CRD desk officer], 1981-1986 [some folios have been closed]; CRD 4/16/134 - Political Briefings: SDP & Liberal…