Leaving University College London with a degree in English, Gunning started at The Whitehouse Post in Soho, London editing commercials for Wieden & Kennedy, 72 and Sunny and Mother. Work on Nike, Levis, Adidas, VW, and Guinness lead to numerous awards, including D&AD, AICP, and a Gold lion at Cannes. 

Went on to edit multiple BAFTA/BIFA/Golden Globe winning movies for Anthony Minghella, Martin McDonagh, John Madden, Lasse Hallstrolm and Sam Taylor-Johnson. These include ‘Seven Psychopaths’, ‘Salmon Fishing in the Yemen’ and ‘Nowhere Boy’.

Wrote, directed and edited a multi award winning film for Goldfrapp based on five stories from their album 'Tales of Us'. The film streamed in over 400 cinemas worldwide.  

Moved to LA in 2017 and has since directed commercials for Amazon, Google, Ford, Subaru, Honda, Mini, OnStar, Barclays, Toyota, Walmart, American Airlines, HP and Corona. 

Directed episodes 2, 4 and 5 of 'The Power'. A global thriller based on the best selling book by Naomi Alderman, produced by Sister Pictures (Chernobyl) released on Amazon Prime in March 2023.

Most recently directed episodes 4, 5, and 6 of Black Doves. A six part spy thriller for Netflix/Sister Pictures starring Kiera Knightly, Ben Whishaw, Sarah Lancashire and Tracey Ulman due for release Dec 5th 2024.