|Fiona "Tosh" Mackintosh|
|Portrayed by||Rebecca Scroggs|
|Introduced by||Dominic Treadwell-Collins (2014)|
|First Appearance||25 February 2014|
|Last Appearance||11 December 2014|
|Cause/Reason||Tosh's relationship with Tina broke down|
Fiona has been known as Tosh since she left school. She’s never been a girly girl, and no one was surprised to see her join the fire service. Tosh loves the camaraderie, physical challenge and the hero status it brought.
Independent Tosh has quite a high opinion of herself and is very popular. She has a fiery relationship with Tina and is drawn to her for her spontaneity and sense of fun. Tosh can be quite the romantic, but at other times frustrated and paranoid. With a history of domestic violence between her and Tina, there’s no surprise that Tosh is rather disliked by Shirley!
After arguing with her sister Shirley Carter, Tina decides to reconnect with Tosh after realising that she still views Tosh as "a loved one". She brings Tosh to a family dinner, where she instantly clashes with Shirley, who knows that Tosh can be violent and previously beat Tina when they were together, while befriending Tina's sister-in-law Linda Carter. Shirley visits Tosh at the fire station to warn her to stay away from Tina, but is humiliated by the firefighter who soaks her using a fire hose. Still determined to stop Tina from seeing Tosh, Shirley locks her in the upstairs lounge of The Queen Victoria public house, but Tosh rescues Tina with a fire ladder. As they prepare to spend some time together as a couple, Tina is called to help Cindy Williams who has drunk herself paralytic despite being pregnant. Tosh, unwilling to give up her time off, leaves Tina to deal with the situation alone.
Tosh later feels insecure about Tina's friendship with Roxy Mitchell despite the fact that she is not a lesbian. In late April 2014, Tosh and Tina agree to spend the night in town. but Tina is caught up with her friend Sonia Fowler, and tells Tosh to leave without her. The following day, Tosh shouts at Tina in The Queen Vic and is told to leave by Shirley. She later talks to Aleks Shirovs in The Vic, and they come to a decision that Tosh will move in with him and fellow flatmate Jake Stone, which delights Tina. Later on, Tina moves in with Tosh, Aleks and Jake, which delights Tosh. In June 2014, When Tosh overhears Sonia and her half-sister Bianca Butcher talking about the kiss between Tina and Sonia, Tosh becomes upset, but soon turns physical by pushing Tina against the door causing her to bruise her head.