We’ve pored over the two trailers for Season 9 to pick out all the references and potential callbacks to classic Doctor Who that we can find…

The Daleks’ Master plan

It’s hard to tell yet if Missy is going up against or siding with the Daleks, but this marks the first time that the Master and a Dalek have been onscreen together since 1973’s ‘Frontier in Space’ (or, if you prefer, 1999’s ‘The Curse of Fatal Death’).

Suit up

It may only be a relatively recent addition to the Doctor Who universe, but the Doctor has certainly been getting plenty of use out of those orange spacesuits he sneakily nicked from Sanctuary Base 6 when nobody was looking after 2006’s ‘The Satan Pit’.

The snazzy space-wear has since appeared in ‘The Waters of Mars’, ‘Hide’ and ‘Kill the Moon’. Even astronaut Orson Pink somehow ended up in one on his mission in ‘Listen’.

> Buy Season 8 on DVD on Amazon.

> Buy Season 8 on Blu-ray on Amazon.

Season 9 has been filming in Cardiff since January.

> Here’s everything we know about Season 9 so far.

Which other classic Doctor Who references have you spotted? Let us know below…