Subversion (Definition) Miss Richardson asked the Secretary of State for the Home Department what current definition of subversion the security services are working with; and how this differs from that previously given by Lord Denning and Lord Harris. Mr. Whitelaw The Government accept the definition of subversion put forward by Lord Harris of Greenwich, then Minister of State at the Home Office, on 26 February 1975.—[Vol. 357, c. 947.]