Not quite up to the TARDIS' standard! Former Doctor Who star Christopher Eccleston spotted on The Tube 

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He's best loved for playing the Ninth Doctor in sci-fi show Doctor Who.

But Christopher Eccleston has swapped the TARDIS for the Tube these days, with the 52-year-old star spotted on the Piccadilly line this week.

The British actor was sporting an all-black ensemble that his Gallifreyan alter-ego would have approved of.

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Off on an adventure: Christopher Eccleston has swapped the TARDIS for the Tube these days, with the 52-year-old star spotted on the Piccadilly line this week

Christopher was rocking a long jacket, matching trousers and some smart patent shoes, a pair of glasses perched on his nose.

He might have ditched his character's trademark leather jacket these days, but he still looked just as cool and composed.

The star was deeply engrossed in his free paper as he sped along in the London Underground.

First in the line-up: Christopher famously played the Time Lord the first series of the show's revival in 2005

From the TARDIS to the Tube: The star was deeply engrossed in his free paper as he sped along in the London Underground

Christopher famously played the Time Lord the first series of the show's revival in 2005.

He was joined by Doctor's companion Rose, played by Billie Piper, but quit the show after just one series.

David Tennant, Matt Smith and current Doctor, Peter Capaldi, have all since embodied the quirky time-traveller.

In a chat with 774 ABC Melbourne's Drive radio this autumn, Christopher admitted he regrets leaving after just one series. 

Gone too soon: He was joined by Doctor's companion Rose, played by Billie Piper, but quit the show after just one series, replaced by David Tennant

He revealed: 'It was kinda tragic for me that I didn't play him for longer. He’s a beautiful character.

'I have a great deal of professional pride and, had I done a second season, there would've been a marked improvement in my performance.'

The star also addressed his real reasons for leaving, claiming the first series on the revived franchise was 'chaos' behind-the-scenes.

He explained: 'The first series of any show is always very difficult to sell to the audience and I'm very proud that [we made it] through what was a really badly organised and certainly badly produced first series...

'I hope they have, they certainly didn’t acknowledge it at the time and I wish they would’ve done, because then things would have worked out very differently.'

He revealed: 'It was kinda tragic for me that I didn't play him for longer. He’s a beautiful character'