Frieda Petrenko is a fictional character from the BBC medical drama Holby City, played by Olga Fedori.

The actress quit the role a year later and Frieda departs in the twenty-first series episode "Running", originally broadcast on 26 March 2019.

Frieda resists the suggestion, but after being made redundant and having her diagnostic ability challenged by registrar Antoine Malick (Jimmy Akingbola), she decides to apply for an F1 position, which she achieves early in 2011.

Frieda teams up with consultants Elliot Hope (Paul Bradley) and Michael Spence (Hari Dhillon) in order to save Lev.

Frieda's return to Holby sees her struggle to adjust to working as a doctor and with new colleague, registrar Luc Hemingway (Joseph Millson).

Frieda fears that she has failed her F1 rotation when she is summoned to Henrik Hanssen's (Guy Henry) office, but is pleased to learn that she received the best score in the region and is now an F2, working on Keller ward.

While working on Keller, Frieda finds herself caught between Dan Hamilton (Adam Astill) and Malick, who both want to supervise her on her first day.

Frieda is later assigned the role of mentoring F1 Tara Lo (Jing Lusi), who temporarily comes from Darwin to work on Keller; although she finds her annoying at first the two eventually build up a good friendship.

Frieda is offered a job at St Luke's due to her excellent F1 results, when Malick asks her if she is going to accept it, she throws the number of her potential new boss in the bin and resumes her work.

She won't indulge egos and her bedside manner leaves a lot to be desired, but beneath it all, she does have a real compassion and vulnerability.

She's unlikely to forge friendships with ease but when she does it's likely to be one she'll fight tooth and nail for.The official Holby City website describes Frieda as "sincere, compassionate, supportive [and] honest", but "self conscious, emotionally closed [and] sarcastic.

[4] Frieda is distracted from opening her results when she treats fellow student doctor Jez Atkins (Jake Fairbrother), who is injured falling from his bike.

[5] Frieda initially appears to be coping with her father's death, but she begins to find it harder to concentrate and avoids facing up to her emotions.

When asked by an Inside Soap writer if Frieda's softer side would emerge, Fedori replied "Oh, her character isn't going to change.

"[6] On 18 April 2012, Daniel Kilkelly of Digital Spy reported that Fedori had filmed her final scenes as Frieda, and that she would depart during the following month.

[7] Of Fedori's exit, a spokesperson for the BBC stated "Olga has been a fantastic asset to Holby City and will be sorely missed by the cast and crew.

[11] Frieda returns in the nineteenth series episode "We Need to Talk About Fredrik", originally broadcast on 12 December 2017, as a qualified registrar who clashes with Jac.

[13] In the narrative, Frieda leaves Holby to work for an aid organisation where she can "make a difference" after facing an "ethical dilemma" following a long-running struggle.

Simon describes her as a "fearless, straight talking [...] super-nurse",[20] enjoying her ability to "liven up the place with her unlikely combination of ghoulish demeanour and slapstick sense of humour.