Helen Mirren(01 of13)
Open Image ModalPeter Capaldi is proof that an older star can be perfect in the show's lead role, and anything that means we get more Helen in our lives can only be a good thing. (credit:Ian West/PA Wire)
Janelle Monae(02 of13)
Open Image ModalJanelle has only just turned her hand to acting, but as anyone who has seen 'Hidden Figures' can confirm, she's certainly something special.
Might the BBC be aiming a little high if they tried to sign up the Screen Actors' Guild award winner? Yes. Does that mean they shouldn't try? Absolutely not. (credit:Matt Sayles/AP)
Rebecca Root(03 of13)
Open Image ModalWe're still disappointed that Rebecca's show 'Boy Meets Girl' won't be returning, but landing this role would make up for it. (credit:Karwai Tang via Getty Images)
Vicky McClure(04 of13)
Open Image ModalVicky has proved she's got what it takes to tackle huge roles, thanks to her parts in 'This Is England' and 'Line Of Duty', but we'd love to see her take on something with a fun side. (credit:Anthony Harvey via Getty Images)
Jenna Coleman(05 of13)
Open Image ModalJenna served as the Doctor's loyal assistant for three years, but in the world of science fiction, anything is possible and we're sure the writing team could cleverly come up with a way to put her front and centre. (credit:Matt Crossick/PA Wire)
Samira Wiley(06 of13)
Open Image ModalSamira is no stranger to television, having starred as Poussey Washington in four seasons of 'Orange Is The New Black'. (credit:Dan MacMedan via Getty Images)
Joanne Froggatt(07 of13)
Open Image ModalWe haven't seen enough of Joanne since 'Downton Abbey' came to an end, and the Tardis would certainly be a departure from the drab and dingy servant's quarters her character Anna was used to. (credit:David Livingston via Getty Images)
Susan Wokoma(08 of13)
Open Image Modal2017 is being billed as Susan's breakthrough year, but her CV is already more-than-impressive, thanks to roles in shows such as 'Misfits', and films 'Burn, Burn, Burn' and 'The Inbetweeners 2'. (credit:Eamonn M. McCormack via Getty Images)
Sian Brooke(09 of13)
Open Image ModalSian made her mark on 2017's 'Sherlock', playing a master of disguise. Quite frankly, if she can morph into four different personas with such ease, the role of the Time Lord would be a walk in the park. (credit:Eamonn M. McCormack via Getty Images)
Antonia Thomas(10 of13)
Open Image ModalAntonia is another star who found fame on E4, playing the feisty Alisha in 'Misfits' - which also gave her a taste for the perils of time travel. (credit:Doug Peters/Doug Peters)
Olivia Colman(11 of13)
Open Image ModalMulti-award winning actress Olivia also made the bookies' shortlist, with odds of 20/1. (credit:Matt Crossick/Matt Crossick)
Hayley Atwell(12 of13)
Open Image ModalHayley was vocal about the fact she wanted the role back in August 2015. Her comments came at an interesting time, as 'Doctor Who' writer AL Kennedy had just claimed that the Doctor should never be a woman. (credit:Eric Catarina via Getty Images)
Lara Pulver(13 of13)
Open Image ModalWhen Capaldi announced his decision to step down from the role, bookies soon named Lara the female favourite for the role, offering odds of 10/1. (credit:Dominic Lipinski/PA Archive)