Struthers developed an interest in photography from an early age, learning to develop and print his own photographs in a makeshift darkroom at home. He later studied graphics, fine art and photography at the University for the Creative Arts before completing a degree in Media and Design at the University of Portsmouth, where he became increasingly focused on cinematography.
In 1997, Struthers developed and photographed Rescue: Four Days in August, a documentary commissioned by Channel 4 for its Cutting Edge strand. He subsequently completed three years of study at the National Film and Television School, where he was mentored by cinematographer Freddie Francis. He began working professionally as a cinematographer in 2000, initially photographing documentaries for the BBC, including Welcome to Britain, Your Life in Their Hands and Trading Ages.
Struthers moved into scripted television, with credits including Night & Day, Dream Team and Shameless. He photographed the BBC period drama Garrow’s Law (2009) before working on the second series of Downton Abbey (2011). His subsequent British television credits include Foyle’s War, Last Tango in Halifax, Doctor Who, Endeavour and Shetland.
His international television work includes Da Vinci’s Demons, Black Sails, Marco Polo, The Alienist and Nightflyers. He served as cinematographer on the first season of The Witcher (2019) and later worked on the science-fiction series Invasion, photographing its second season. His other credits include Halo: Nightfall (2014), The Rook (2019), Charming the Hearts of Men (2020) and Mary (2024).