'Doctor Who' may be moving to a Sunday night slot.

Jodie Whittaker as Doctor Who

Jodie Whittaker as Doctor Who

The long-running sci-fi series has aired in a number of different positions since its launch in 1963, but it always seems to return to its original Saturday teatime slot.

However, BBC bosses are seriously considering shifting it to the same time on a Sunday this year because they're sick of having to fit it around 'Strictly Come Dancing'.

A source said: "On Saturdays everything has to fit around 'Strictly Come Dancing'. Moving 'Doctor Who' to a Sunday could make perfect sense. It is a serious option."

And that's not the only change being lined up for the new series as Chris Chiball - who has taken over as show runner from Steven Moffat - is planning to give it a revamp.

The insider explained to the Daily Mirror newspaper: "Chris is taking 'Doctor Who' apart to give it a revamp. The only things viewers will immediately recognise are the sonic screwdriver, the TARDIS and the theme tune."

The show will see a number of new faces as Jodie Whittaker has been cast as the first ever female Doctor Who after Peter Capaldi announced his decision to step down, while Bradley Walsh, Tosin Cole and Mandip Gill will join her in the TARDIS.

And it looks like Olivia Colman - who worked with Chibnall on 'Broadchurch' - may make an appearance as she has admitted she and the show runner have "talked" about her joining the show - but only if he agrees to let her play a "horrible baddie."

Speaking to the Radio Times magazine, she said: "We've already talked about it. I want to play a really horrible baddie... whether or not it fits in...

"It's a bit much to just ask someone, 'Can I be in it?' "