Intrusion Counter-Measures Group

Intrusion Countermeasures Group or ICMG was a secret arm of the British military which acted as a predecessor to UNIT, intended to take action against covert threats to British soil.

History
The ICMG was formed in 1961 under the command of Group Captain Ian Gilmore, who drafted scientific specialists like scientist Rachel Jensen under the Peacetime Emergency Powers Act. (DW: Remembrance of the Daleks) The Intrusion Countermeasures Group was composed of Royal Air Force personnel and equipment.

The group encountered the Daleks and the the Doctor in 1963, in what became known as the Shoreditch Incident. They were shut down soon after. (DW: Remembrance of the Daleks, MA: Who Killed Kennedy) Journalist James Steven attempted to investigate and make public information concerning this group, as well as UNIT, but was stymied in doing so. (MA: Who Killed Kennedy)