EAP
I tried to keep it succinct. On 16 November 2011, MoD promulgated SIL704 by means of Urgent Technical Instruction/Hawk/34. On 17 November 2011, the Civil Aviation Authority reflected it in Emergency Mandatory Permit Directive (EMPD 2011-008-E), which notified users other than the MoD. Two years later, SIL704A was issued - same again.