Robert Armstrong (Home Office)

Letters between Cabinet Secretary and BM Day on assessing subversion, proposing a study with a view to reviving Committee on Subversion (Home) (CAB 301-490-1)

Cabinet Secretary letter to the Foreign Secretary arranging ministerial meeting to set up group to address subversion (CAB 301-490-1)

Home Office letter to Prime Minister enclosing two MI5 reports of an industrial dispute (reports redacted) (PREM 15-781)

Discussion document on the definition of subversion, the remit of MI5, and the desire for secret units to monitor industrial politics, plus letters relating to the doc (CAB 301-491)

Meeting minutes of Group on Subversion in Public Life, 17 Dec 1973 and 27 Nov 1972 (CAB 301-494)

Letter from Cabinet Secretary to Arthur Peterson saying new Prime Minister wants resumption of secret Industrial Assessments Group and Subversion in Public Life groups (CAB 301-484)

Home Office letter to Cabinet Secretary on extending methods of countering and discrediting subversive people and organisations (CAB 301-489)

Cabinet Office letter on history and revival of the Committee on Subversion at Home and the Group on Subversion in Public Life, with terms and composition of the latter (CAB 301-489)

Memo from Rodger to Ch. Supt. 'S' Squad requesting set up of group to assess the continuing need for SDS, breadth of coverage and dissemination of intelligence

Letter to the Home Office providing a copy of a memorandum agreement improving liaison between MI5 and Special Branch (not attached)

Correspondence between Home Office and Met about a memorandum agreement on improving liaison between MI5 and Special Branch

SDS Annual Report 1976, inc letter from Assistant Commissioner to Home Office

Letter from Robert Armstrong Home Office to Jock Wilson authorising continuation of the SDS in 1976/77

Note of a meeting held to discuss the threat of subversion in the UK and reactivation of the interdepartmental Group on Subversion in Public Life (CAB 301-489)

Letter from Cabinet Secretary proposing reinvigorating the Group on Subversion in Public Life and the Committee on Subversion at Home (CAB 301-489)

Revised Composition and Terms of Reference for the Interdepartmental Group on Subversion in Public Life, 1976 (CAB 301-489)

Meeting minutes of reconstituted Inter-Departmental Group on Subversion in Public Life, held at Cabinet Office on 10 Nov 1976 (CAB 163-269)

Briefing Note for Cabinet Secretary for upcoming meeting of the Subversion (Home) Committee (CAB 301-489)

Letter from Jock Wilson (Asst Commissioner (Crime) to Robert Armstrong at the Home Office seeking formal approval for continuation of the SDS

Letter from Home Office to New Scotland Yard authorising continuation of the SDS in 1977/78 and approving its budget

Minutes of a meeting of the Interdepartmental Group on Subversion in Public Life discussing MI5 report 'The Threat of Subversion in the UK', held at Cabinet Office on 11 July 1977 (CAB 163-269)

Letter from MI5 to Sir Robert Armstrong (HO) on possible revision of Terms of Reference for Special Branches

Note of MI5 meeting to discuss Terms of Reference for Special Branch, held on 7 Dec 1978

Home Office letter to MI5 on describing their work with police in the new terms of reference for Special Branches

Home Office letter on altering 'Terms of Reference' for Special Branches

Letter from Hayden Phillips (Home Office) to DAC Bryan on whether to update guidance for Special Branches and more detailed info on them, inc draft public document (not attached)

Letter from Heaton (Home Office) to MI5 enclosing a draft copy of Terms of Reference for Special Branches (not attached)

MI5 letter to Heaton (Home Office) advising against redrafting Terms of Reference for a Special Branch

Home Office F4 paper on the review of the work of Special Branches, with internal cover letter

Letters on Prime Minister reading an MI5 report on subversive groups' response to 1981 riots (CAB 301-485)