Old, old, really old work.
This is a selection of Doctor Who work from 2009 produced whilst working for Edward Thomas (production Designer) and with Dan Walker (Concept Artist) on the redesign of the Tardis for Matt Smith's first year...

 At one point it was looking like the Ext. police box dimension maybe based on the real metropolitan police box...

Alternative console design...

Dalek Interior ship

Tardis Interior re-design

This would clearly be too large and impractical for TV but this is how I would re-interpret the Tardis console room (if budget, size and camera positions weren’t an issue)

Sketches and test renders.

The design is also heavily influenced be Lee Sullivan’s comic work from the 1990s, which I loved when I was growing up.

check out more of Lee's work here:http://www.leesullivanart.co.uk/www.leesullivan.co.uk/HOME.html

Spacecraft sketch

Digital sketching and marker style sketch, photoshop

It's amazing how old, traditional methods are still relevant via digital technology, this is exactly how I used to worked when I was in school, with pens and markers. (also, if your school teachers ever told you that you can't get a job drawing spaceships for a living, they didn't know what they were talking about)

Mars Rover concept

messing around with Sketch up again, podium render with photoshop paint over

Omega redesign

Here's a re-imagined version of the villain Omega from classic Dr Who, photoshop painting.

Victorian, steam punk inspired Tardis interior

Sketch up model, podium render and photoshop paint and clean up

messing around with Sketch up, podium and photoshop, army drone type thing...

Quick 60 min marker style sketch. WW2, diesel punk fighter plane!