Josh Carter Joshua " Josh " Carter was a member of UNIT under Kate Stewart ' s leadership . Biography . Early life . Carter studied Electrical Engineering . ( AUDIO : " Armageddon " ) Joining UNIT . Carter didn ' t complete his training at Sandhurst Military School , Colonel Shindi noted that he had a reputation at Sandhurst for being " disruptive , ill - disciplined , [ and ] question [ ing ] authority . " Carter claimed he liked to test the boundaries and think outside the box . Upon his recruitment to UNIT , Carter had several clashes with the Colonel over his personality . ( AUDIO : " Vanguard " ) Stopping a Nestene invasion . Kate sent him on a search to find the Auton s in the UK after he was concerned about Osgood going on a field mission . ( AUDIO : " Earthfall " ) He went undercover as a Devlin Futuretech employee to get more information . He saved Jacqui McGee from being killed by an Auton . He then , with the help of Osgood , to hack the mainframe and stop the Nestene from combining . Simon Devlin then converted him into an Auton - like creature . ( AUDIO : " Bridgehead " ) The Nestene Consciousness planned to use him to destroy UNIT . Osgood managed to overcome this control . He gained super strength allowing him to bend metal a couple of inches thick . ( AUDIO : " Armageddon " ) Tengobushi incident . He helped Kate to investigate the disappearance of a UNIT scientist , when he discovered that Lyme Industries was involved . He went undercover with Kate to retrieve UNIT property from Lyme ' s hands . After Osgood was attacked by the Tengobushi , he helped to get her out of her flat . ( AUDIO : " Power Cell " ) Whilst Kate and Osgood went to Geneva , he was ordered to investigate the aliens that attacked them . After Sam told him that Anna Burges was killed to find out where Osgood had gone , he went to Geneva and managed to save her from being killed by a Tengobushi . After Kate and Osgood entered the Tengobushi ship , he tried to follow but couldn ' t get through the forcefield . However , using the firepower of the Geneva UNIT force , s he broke his way through to rescue Kate , Osgood and Grant Avery . ( AUDIO : " Death in Geneva " ) He used his Auton strength to remove a Tengobushi assassin from the plane he was on after it killed the pilots . He was then tasked with abducting Lyme . During the Tengobushi attack , Osgood was trapped in the Archive , Josh managed to get her away but managed to get her first to the Jewellery room and then to command centre . He was then asked to evacuate Peter Latchen from the Tower along wit the rest of the UNIT troops . ( AUDIO : " The Battle of the Tower " ) They went to UNIT base under the Rock of Gibraltar and he was placed under arrest by Latchen . With Osgood ' s help he escaped and flew an experimental aircraft to rendezvous with Sam Bishop to stop Lyme and her plans . He stayed behind to destroy the generator that Lyme created . ( AUDIO : " Ice Station Alpha " ) Investigating the Silence . He trained Kate in how to use her gun . He was part of the attack on Helena Faversham ' s house to find the Silent s and he wanted to kill them on sight . After escaping one of them , he was captured by them . ( AUDIO : " House of Silents " ) He thought that Kenneth LeBlanc was a visionary , much to Bishop ' s disarray . He was conditioned by the Silents to help them . He went to LeBlanc ' s house to offer his help . Using his influence with UNIT and with the Silents ' help , he got the Prime Minister to resign and call and election . ( AUDIO : " Square One " ) At the end of LeBlanc ' s campaign , he became extremely engaged in him winning . Osgood came to see him and stole his laptop using the same memory manipulation technique that the Silents used . He was later ordered by the Silents to assassinate LeBlanc , but when the time came he hesitated . Osgood managed to stop him . ( AUDIO : " Silent Majority " ) After he recovered from the LeBlanc debacle , he was posted to stores as light work . He found some of the stuff from the Silents mission . After Osgood and Bishop came back to Earth , he picked them up from the middle of the Atlantic . ( AUDIO : " In Memory Alone " ) The Silurian invasion . He stayed at UNIT HQ when Osgood reported on the start of the Silurian invasion . Osgood tried to get a message to him but didn ' t succeed . Later , Burmaster managed to contact him and he came up to rescue them . ( AUDIO : " Call to Arms " ) He later came to evacuate Sam , Kate and Osgood from a Silurian Nest in Greece . ( AUDIO : " Retrieval " ) Managing to get back to London , he helped Mike Yates to run the UNIT defence of the UK . He went with Yates to meet Jastrok in Westminster Abbey . Jastrok wanted their surrender . He went to the nuclear base where Kalana was setting off the weapons and fought her in hand to hand combat , knowing that his Auton enhancements would help . He managed to reflect the Fear Trigger back on Kalana . ( AUDIO : " United " ) Brief Encounters . He and the team flew to South America on intelligence that a local resistance force had obtained alien technology . There they met resistance leader Captain Gonsalves and discovered that she had a captured Dalek in her secure bunker . While Kate and Shindi searched the jungle for other Daleks , Josh and Osgood searched the base . They discovered a series of rooms containing human weapons augmented by alien technology and were captured by Gonsalves . Once the others returned , Josh and Shindi were led on a wild goose chase around the jungle and back to the bunker to find the missing Dalek . Having re - entered its casing , the Dalek killed Gonsalves and self - destructed , destroying the bunker . Having escaped the explosion , Josh and the team were then rescued by the American arm of UNIT . ( AUDIO : " The Dalek Transaction " ) After seeing an apparition of a Grey Man at a Halloween party that he was attending and being the only one not terrified by it , Josh spoke to Osgood about the incident . After hearing some unsettling messages from Kate , Josh persuaded Osgood to accompany him up to Ealdon House in a UNIT helicopter . Once there Osgood discovers the apparitions of the Grey Man are caused by a particular resonance in the house and Josh is immune to this because of his Nestene skeleton . Alice Donelly had also discovered this resonance in the house years before and she wanted to harness it as a weapon before Kate ’ s father stopped her . With an unknown alien presence drawing near , responding to a message Alice left years ago , the team deciphered and completed the message , averting the crisis . ( AUDIO : " Invocation " ) Josh and Osgood became trapped in a sideways dimension after an experimental travel capsule took them there by mistake . Here UNIT was run by a fascist state with different versions of the team , including himself . He was startled to discover this world ' s Josh and Osgood were very much an item and he had some trouble avoiding her advances . Eventually , he made it back to his own universe but with the wrong Osgood in tow . He was forced to keep up the pretence of being in love with her but this only made the others more suspicious . When the Osgood of his univese returned , Josh without thinking planted a large kiss on her lips before realising his mistake . Soon the other Osgood attempted to escape again in the capsule . Josh and the team were saved when the capsule just managed to disappear before the dimensional gateway imploded . Heading to Kate ' s office , this left the real Josh and Osgood ' s relationship ambiguous . ( AUDIO : " False Negative " )