Doctor Who actor David Tennant and former showrunner Russell T Davies have been spotted in Cardiff this week.

Davies’ final work on the show was 2010’s ‘The End of Time: Part 2’, featuring the Tenth Doctor’s regeneration into Matt Smith, while Tennant was last seen in 2013’s ‘The Day of the Doctor’.

The pair were snapped by Twitter user @TraviataJones in Cardiff last night.

[That photo edit has all gone a bit ‘The Idiot’s Lantern’, sorry!]

Tennant and Davies have apparently been in Wales for a few days now, fuelling speculation that Tennant is filming new Doctor Who scenes.

Peter Capaldi has hinted in recent interviews that his previous role as Caecilius in 2008’s ‘The Fires of Pompeii’ will be addressed in Season 9, while current showrunner Steven Moffat has confirmed: “We are going to resolve the matter of his face. He’s going to try and figure out where he’s seen that face before.”

Of course, they could just be on holiday and having a catch-up.

> Buy Season 8 on DVD on Amazon.

> Buy Season 8 on Blu-ray on Amazon.

Season 9 has been filming in Cardiff since January and begins on Saturday 19 September on BBC One.

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

What are your theories? Let us know below…