Mr Selfridge series 2: Polly Walker introduces Delphine Day

The Prisoners' Wives actress swaps curling tongs for corsets as she joins Jeremy Piven and Katherine Kelly in the ITV period drama

Delphine Day has her own nightclub, her own finances and her own friends – is she an early incarnation of the “modern woman”? 


She is. She’s divorced and she’s been married three times which even by today’s standard is quite racy. She’s a novelist – she writes erotic books and she has a nightclub, a very, very fashionable nightclub which is a bit anti-establishment. It’s not particularly refined – it’s more like The Box or something like that. 

But she doesn’t have much money? 

She’s managing a business and she’s got no man to support her. She’s good friends with Rose Selfridge which is hopefully a lucky relationship and she’s very forthright and very honest and she’s not demure – she’s quite direct.

She’s certainly got the best name…

I think so. Delphine Day. I might have to borrow that – my alter-ego. 

So, does she use her sexuality to get her own way?

She does, but in a very direct manner – she’s not coy and nor is she propositioning people. From what I’ve been exposed to so far with her, I think she’s pretty cool. 

We see Rose Selfridge become even more independent this series – is that all down to Delphine?

I wouldn’t say that’s all down to her but she’s certainly a part of that. I don’t really know much about Rose’s character but I imagine she’s had to spend a good portion of her life listening to Harry Selfridge and what he’s got to say so to be friends with another woman who doesn’t give a s**t about what a man would say must be quite exciting and novel. 

Does Delphine clash with Harry?

I think he’s intrigued and nervous but they have a lot of common qualities. She’s a really good businesswoman and she’s running a big club in a time when not many women were doing that kind of thing so she’s obviously somebody to be reckoned with – she’s not someone to discount and he’s no fool. 

You’re joining a huge ensemble cast – was there anyone on set who you were particularly excited to meet?

It’s always nice to work with another actress you admire like Frances [O’Connor] and to exchange stories because often as an actress it’s just you – you’re the only other woman and there’s just men so it’s rare that you get to be with a contemporary.

Series 2 of Mr Selfridge begins on Sunday 19 January at 9:00pm on ITV


Watch the trailer for the new series below: