Her most high-profile role was as Deirdre, Calum Buchanan's girlfriend in All Creatures Great and Small.
"When I was doing All Creatures, I had absolutely no desire, no intention, no belief that I could write," recalled Gibb in 2016.
At first I thought it was to play a vet and I was really excited, then I read the script and, of course, it transpired that Deirdre worked at the Ministry of Agriculture.
[citation needed] She was shortlisted for The Dennis Potter Award with her screenplay Lucky Bag and then went on to win a Mental Health Media Award for the film Golden Wedding, which she wrote for BBC Scotland.
[citation needed] Gibb is currently in development with several projects including high-profile adaptations of Swallows and Amazons for BBC Films, Vikram Seth's An Equal Music for Cuba Pictures, Rose Tremain's The Road Home for BBC 2 and Andrea Gillies's Keeper and Andrew O'Hagan novel Mayflies for BBC1.