<P> The Security Service , also MI5 ( Military Intelligence , Section 5 ) , is the United Kingdom 's domestic counter-intelligence and security agency and is part of its intelligence machinery alongside the Secret Intelligence Service ( MI6 ) , Government Communications Headquarters ( GCHQ ) and Defence Intelligence ( DI ) . MI5 is directed by the Joint Intelligence Committee ( JIC ) , and the service is bound by the Security Service Act 1989 . The service is directed to protect British parliamentary democracy and economic interests , and counter terrorism and espionage within the UK . </P>
<P> The Security Service , also MI5 ( Military Intelligence , Section 5 ) , is the United Kingdom 's domestic counter-intelligence and security agency and is part of its intelligence machinery alongside the Secret Intelligence Service ( MI6 ) , Government Communications Headquarters ( GCHQ ) and Defence Intelligence ( DI ) . MI5 is directed by the Joint Intelligence Committee ( JIC ) , and the service is bound by the Security Service Act 1989 . The service is directed to protect British parliamentary democracy and economic interests , and counter terrorism and espionage within the UK . </P>
what does the 5 stand for in mi5
what does the 5 stand for in mi5
Section 5
Section 5