The BBC has announced plans to offer in-vision commentary for selected future episodes of Doctor Who.

The practice is common as an extra feature on DVDs and Blurays but will now arrive on the iPlayer, with cast and key crew members providing commentary while watching various episodes.

The feature launches this Saturday around the first 60th anniversary special, 'The Star Beast', with the Fourteenth Doctor David Tennant alongside producers Phil Collinson and Vicki Delow.

Commentary will also be provided for the third and final special 'The Giggle' next month, with Tennant and Collinson appearing with showrunner Russell T Davies.

"For years, Doctor Who has been providing top-level in-vision commentaries for selected episodes, on DVD," said Davies.

"But we're now bringing this to the iPlayer - as soon as you've watched The Star Beast, you can see exactly what David Tennant thinks of it, scene by scene!

"I think Doctor Who has the greatest behind-the-scenes coverage of any show in the world, and we're determined to keep expanding it!"

Doctor Who: The Star Beast airs Saturday at 6.30pm on BBC One, with the commentary version available via iPlayer immediately after broadcast.