Terrorism: Detention Period Lord Dykes asked Her Majesty's Government: Why they propose to extend the detention period for terrorist suspects beyond 28 days. [HL1360] The Parliamentary Under-Secretary of State, Home Office (Lord West of Spithead) The reasons for our proposals regarding pre-charge detention were set out in the document published on 6 December 2007 entitled Pre-charge Detention of Terrorist Suspects. This can be found at www.security.homeoffice.gov.uk/news-publications/publication-search/general/pre-charge-detention.