Click here to read the main interview with the star, or read on for a bonus Q&A focusing on all things Holby.
What can we expect to happen between Frieda and Oliver this year?
"I can't say too much on that one! There's been talk about things heading in all sorts of directions, and I can't give this one away!"
Who do you most enjoy working with on set?
"There's some people who you work with a lot and others who you just cross paths with. I've been digging working with Jimmy Akingbola a lot - there's quite a bit that's coming out with Malick and Frieda. I love working with Hari Dhillon, who plays Michael, and Emma who plays Penny. And also James who plays Oliver - I haven't had that much juicy stuff with James, but there have been little scenes here and there. And I remember really liking working with Amanda Mealing, but I didn't have much stuff with her. Oh, and I really loved working with Bob Barrett, who plays Sacha. So those are the people who I've worked with most, and it's been wonderful."
Are there any cast members who you haven't worked with much but you're really keen to share some scenes with?
"Yeah, I can't wait to do more with Guy Henry - both him as an actor and him as a character. I think that would be quite interesting - to see a clash between Hanssen and Frieda. So I'm definitely looking forward to working with him."
Have all the recent changes at Holby made it an exciting time to work on the show?
"Yeah, I seem to always hit transition points in my life in general. I mean, I was born in Ukraine when communism was about to fall apart - and it just seems that I always hit places at the transition period for some reason! That seems to be the case at Holby as well. I got a bit of a glimpse of what the show used to be like, but then it all started changing and now it's settling into new shoes and HD has come in. It's definitely exciting, but the truth is that I hadn't had too much of a feel for the show before and this is the only time that I've been on it. But from what I've heard, it's changing quite a bit - it's more fast-paced and the soundtrack is a bit pacier. They're trying to make the show go a bit faster and have more action."
How does Frieda compare to characters that you've played in the past?
"I think she's a lot more defined - I've had a lot more time to work on her subtleties and I've been able to do a lot more research. I've done medical research but I've also done sub-culture research as I've had to learn a lot about goth culture and there's still times when I feel like I haven't done enough of that by any stretch. I've spoken to the costume department about Frieda's clothes, and it's all just constantly expanding. So I guess the main difference is that it's been a lot of detailed work that's quite far removed from who I am in real life."
Are there any similarities between you and Frieda?
"Yeah, I'm sure there's quite a few. I think I can also be quite straightforward, but I'm perhaps a little gentler with people! But I can't sugar-coat things and I'm not very good at flattering - unless it's a very special occasion or someone who deserves very special treatment, like my mum! (Laughs) I'm joking, but I am very straightforward like Frieda is. And I suppose you could say that I'm pretty nerdy - I read quite a few books at the same time and I've always liked studying. When I used to study at university, I would just spend hours and hours in the library and forget the time, and I think Frieda is very much like that as well!"
Cast your votes for the National Television Awards by clicking here. Olga is nominated in the 'Best Newcomer' category alongside Coronation Street's Paula Lane, EastEnders' Ricky Norwood and Emmerdale's Marc Silcock.
> Click here to read Ricky Norwood's NTA chat
> Click here to read Marc Silcock's NTA chat
> Click here to read Paula Lane's NTA chat
> Click here to read Danny Miller's NTA chat
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