After graduating from University College London with a degree in English, Gunning started her career at The Whitehouse Post in Soho, London editing commercials for top agencies like Wieden & Kennedy, 72 and Sunny and Mother. Her work on Nike, Levis, Adidas, VW, and Guinness lead to numerous awards, including D&AD, AICP, and a Gold lion at Cannes. 

She 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’.

In 2014, she 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.  

Gunning 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. 

She 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 she completed episodes 4, 5, and 6 of Black Doves. A six part spy thriller for Netflix starring Kiera Knightly, Ben Whishaw, Sarah Lancashire and Tracey Ulman due for release in Christmas 2024.