Glenn started his directing career at MTV where he directed over 100 music, news and film reports. Including directing: Mariah Carey, James Brown, Jon Bon Jovi, Beastie Boys, Massive Attack, David Bowie, Meg Ryan, and Kermit the Frog.

He has directed documentaries for the main channels on subjects as diverse as crime, neuroscience and cooking.

He has self shot documentaries in India, South East Asia and North America.

He has directed access based documentaries on religious cults, the UK police, the porn industry.

Even when he is showrunning and series producing he chooses to direct and storyboard key sequences.