Sean Cronin was an assistant grip, credited on the following Doctor Who stories:
- Before the Flood
- The Caretaker
- Dark Water
- Death in Heaven
- Deep Breath
- The Doctor Falls
- The Eaters of Light
- Empress of Mars
- Extremis
- Face the Raven
- Hell Bent
- The Husbands of River Song
- In the Forest of the Night
- Into the Dalek
- Kill the Moon
- Knock Knock
- The Lie of the Land
- Listen
- The Magician's Apprentice
- Mummy on the Orient Express
- Oxygen
- The Pilot
- The Pyramid at the End of the World
- The Return of Doctor Mysterio
- Robot of Sherwood
- Smile
- Thin Ice
- Time Heist
- Under the Lake
- The Witch's Familiar
- The Zygon Invasion
- The Zygon Inversion