He won an army of fans for his role as role as hapless Assistant to the Regional Manager Gareth Keenan in comedy classic The Office.

But Mackenzie Crook was worlds away from his comedy days on Tuesday as he transformed into a scary druid to film Roman epic Britannia.

The 46-year-old actor sported the incredible facial makeup and mystical robes to film scenes on location as the magical druid Veran, after the Sky Atlantic series received a second series order in March.

Transformed: Mackenzie Crook was worlds away from his days on The Office on Tuesday as he transformed into a druid to film scenes for the Sky Atlantic series Britannia

During the filming Mackenzie can be seen sporting a bald cap and pale white prosthetic makeup as he transformed into the magical character Veran, sporting a blood covered face as he appeared to be involved in a conflict of sorts.

In history past druids have been known for their close proximity to nature, and so it was inevitable that such scenes would be filmed deep in the forest.

Britannia made a huge splash earlier this year when it premiered on Sky Atlantic in the UK, co-starring David Morrisey, Kelly Reilly and Nikolaj Lie Kaas.

New look: The 46-year-old comedy actor was spotted filming scenes on location in a forest, playing the mystical character Veran in the show's recently announced second series

Old days: Mackenzie made a name for himself as the hapless Assistant to the Regional Manager Gareth Keenan in The Office UK, which aired from 2001 to 2003

The series tells the tale of the Romans famous conquering of Britain in AD 43, showing the Celts fruitless attempts to protect their land, with two rival tribes coming together against the Italian enemy.

Mackenzie's appearance comes following reports that he is set to take on the role talking scarecrow Worzel Gummidge in a TV revival - 37 years after the late Jon Pertwee last played the iconic children's character.

A source told MailOnline last month: 'Mackenzie Crook is currently in the very early stages of developing a contemporary adaptation of Barbara Euphan Todd’s original Worzel Gummidge books as a new TV series for the BBC.'

New look: Sporting a bald cap and pasty white prosthetic makeup, Mackenzie was transformed into the character as part of the series depicting the Roman Conquest's of Britain

Separate sources told The Sun: 'Mackenzie has been working on this for some time. He’s written most of the script and pitched it to the BBC who were keen and are now officially on-board.

'It is not a continuation of the old story. Worzel is a legendary kids TV character and Mackenzie is keen to make sure the series does it justice.'

MailOnline contacted a representative for Mackenzie for further comment.

Mackenzie made a name for himself as Gareth Keenan in Ricky Gervais' classic sitcom The Office before making the transition to film and a recurring role in the Pirates of the Caribbean franchise.

He has also featured in popular TV shows Skins, Merlin and Game Of Thrones, and created the BBC Four comedy series Detectorists which ran from 2014 to 2017, and won Toby Jones a BAFTA for Best Male Comedy Performance earlier this month.

New project: Filming for the series came following reports that Mackenzie was rumoured to be in talks to play talking scarecrow Worzel Gummidge in a TV revival