Home Office courses such as SOIT, National drugs, and Tier 2,3 & 5 interviewer, Family Liaison Officer, Specialist Fraud etc. The RAF Police SIB differs slightly from its RMP counterparts in terms of rank structure, employing a mix of Corporals and Sergeants. Both SIB(S) and SIB(N) additionally employ a number of Acting Corporals. SIB personnel extensively deployed with their RMP SIB counterparts throughout the duration of Op Banner, Northern Ireland; Op Telic, Iraq; and Op Herrick, Afghanistan in support of combat operations. Her Majesty's Inspectorate of Constabulary conducted an inspection of the SIB in 2009. DCSU In December 2022, the Defence Serious Crime Unit was formed to replace the three separate strands of single service SIBs. It will be headquartered at Southwick Park, and will combine personnel from all three services. Its remit is to investigate serious crimes outside of the normal chain of command. See also Redcap (1960s ITV series) Red Cap (2000s BBC series) References External links Royal Military Police Association (SIB Branch) ROYAL MILITARY POLICE - SPECIAL INVESTIGATIONS BRANCH (UNITED KINGDOM) - British Army official website Military police of the United Kingdom