Internal Counter - Intelligence Service The Internal Counter - Intelligence Service was a military / intelligence organisation operating within the United Kingdom . Its remit was to combat alien and paranormal incursion on UK soil . It was shut down following involvement in ethnic cleansing and an attempted coup . History . The ultra - nationalist group ICIS had been around for a few years by the early 2000s . It had ties to the Forge . ( PROSE : " Project : Valhalla " , AUDIO : " Project : Destiny " ) ICIS and its government backers , like press secretary Philip Kirby , were becoming increasingly concerned with the country ' s involvement in the United Nations and European Union , which they thought undermined its sovereignty dangerously . ( AUDIO : " The Longest Night " ) They recruited a young nationalist soldier named Ross Brimmicombe - Wood soon after his training , grooming him as a double - agent within UNIT . ( AUDIO : " The Wasting " ) Kirby got his illegitimate daughter , Andrea Winnington , into ICIS from the start . ( AUDIO : " The Longest Night " ) By around the mid - 2000s , the government had decided to shut down the UK branch of UNIT and replace it entirely with ICIS . By this point , Brimmicombe - Wood was commanding UNIT . Both groups used UNIT ' s base to prepare for the change . Before the handover , ICIS fired on a Silurian diplomatic party , prompting a retaliatory strike at London that ICIS and UNIT dealt with ; Brimmicombe - Wood commanded both teams and ICIS were ordered to leave no prisoners . To keep this out of the press , ICIS ' s Sergeant French captured and tortured BBC journalist Francis Currie into staying quiet . This backfired when , on the day of the handover and resulting press conference , a Silurian ambassador contacted Alistair Gordon Lethbridge - Stewart , while UNIT ' s Emily Chaudhry became aware of French ' s actions . They revealed the Silurian ' s and UNIT ' s remit at the press conference , inciting ICIS ' Captain Andrea Winnington to fire on the reptilian ambassador . ICIS was discredited and UNIT argued it should retain control of alien matters . Winnington and French were arrested , ICIS was given a separate base with a UK security remit separate from UNIT ' s and both groups co - existed . ( AUDIO : " The Coup " ) Despite this , people as high up as Deputy Prime Minister Meena Cartwright considered ICIS to be thuggish hooligans and even the Prime Minister preferred UNIT to them by 2005 . ( AUDIO : " The Longest Night " ) ICIS were already working to take over the country to protect its sovereignty . They used reverse - engineered alien technology and government helplines to program the general public into becoming sleeper agents , intending to use them to trigger a wave of terrorism and violence . ( AUDIO : " The Longest Night " ) They were also using alien spacecraft blueprints stolen from UNIT to construct a time - space teleportation device . To further this they raided a UNIT convoy to steal the spacecraft it was transporting . In the process , Brimmicombe - Wood was " abducted " . However , their continued time - space experiments caused time fluctuations , leading to a series of horrific accidents . ICIS destroyed the site of the experiments , ensuring nothing led back to them . ( AUDIO : " Time Heals " ) They also released unwittingly an alien virus from the spacecraft . It began spreading across Earth . ( AUDIO : " The Wasting " ) Two years after ICIS was created , the Prime Minister signed the controversial Euro Combine treaty and ICIS triggered their coup earlier than planned . They activated random sleeper agents to create a wave of destabilising terrorism nationwide , turning the country against itself - riots and ethnic violence became endemic . The Deputy Prime Minister was also triggered into killing herself , leaving the PM vulnerable while Philip Kirby pushed him to send ICIS onto the streets . To discredit UNIT , Winnington was freed from jail and sent to provoke Chaudhry into murdering her while UNIT ' s new commander Colonel Robert Dalton was " triggered " to assassinate the Prime Minister after ICIS was deployed . While ICIS was deployed and began gunning down people across London , Chaudhry was able to break Dalton out of his brainwashing and revealed the conspiracy to the PM . He declared ICIS would be shut down . The defeated Winnington was demoralised after seeing the carnage in London caused by her faction . Kirby , however , triggered a suicide bomb in a final act of defiance , devastating 10 Downing Street and killing Dalton . ( AUDIO : " The Longest Night " ) In early 2008 , Lysandra Aristedes was an ICIS lieutenant . ( AUDIO : " Project : Destiny " ) ICIS still remained in operation after this and was called in to assist during the growing alien plague . Knowing UNIT would oppose them , they swiftly framed them for deliberate murders and secured orders to arrest the UK contingent ' s officers . Chaudhry and Lethbridge - Stewart led as many loyal UNIT soldiers as possible into going on the run . They discovered Brimmicombe - Wood had been leading ICIS all along . ICIS pursued UNIT to Russia , trying to wipe them out ( despite UNIT trying to deploy a cure for the plague ) . Brimmicombe - Wood was defeated in combat and arrested , while ICIS ' newer crimes were revealed . The organisation was finally shut down . ( AUDIO : " The Wasting " )