Gemma Arterton Reveals Secret Pregnancy and CGI Use

has opened up about her secret pregnancy that took place as she filmed the new drama Secret Service. 

The actress, 40, explained that she was three and a half months pregnant when shooting for the new show began - and eventually producers had no option but to use CGI to hide her 'very obvious' bump. 

Gemma welcomed her second child with her husband Rory Keenan late last year and shared the news earlier this month.  

The actress spoke to The Times about filming the new show which airs on Monday: 'I can so see it when I watch it. I started at about three and a half months pregnant and they just kept expanding the waistlines. 

'By the end, I was six months and it was just undeniable and I think they had to do a bit of CGI on a couple of shots because it was very obvious. 

'I mastered the art of, you know, the lean that hides it, certain positions, bags, arms crossed, all that.'

Secret Service stars Gemma as a British intelligence officer as she attempts to solve a major political case while balancing being a parent to two teenagers. 

The show's IMDb synopsis reads: 'A British intelligence officer races against time to uncover a UK politician's potential ties with the Kremlin, risking her reputation and family, as a murder and election loom.' 

Told over five parts, Secret Service is based on the novel of the same name by ITV political journalist, Tom Bradby. 

Gemma told ITV: 'There has been lots of talk about a female Bond and it's not like that. What sets this apart from a lot of others is that it looks at the domestic as well.

'She is a mother of two teenagers, she has a busy life, how do you live a life with so much secrecy? It's hard enough being a parent, without all this other stuff on top. I really connected with that actually.'

Following the recent release of a teaser trailer for the show on YouTube, fans were quick to share their excitement for Secret Service.

They wrote: 'Gemma Arterton is an underrated actress, glad to see her again.';

'I do enjoy these UK dramas. Better than reality, as the Russian assets in the UK don't even bother being sneaky, let alone discreet.'