Ian Fowler was a costume assistant credited on the following Doctor Who stories:
- The Magician's Apprentice
- The Witch's Familiar
- Under the Lake
- Before the Flood
- The Girl Who Died
- The Woman Who Lived
- The Zygon Invasion
- The Zygon Inversion
- Sleep No More
- Face the Raven
- Heaven Sent
- Hell Bent
- The Husbands of River Song
- The Woman Who Fell to Earth
- Arachnids in the UK
- The Tsuranga Conundrum
- Demons of the Punjab
- Kerblam!
- The Witchfinders
- It Takes You Away
- The Battle of Ranskoor Av Kolos
- Resolution
- Spyfall
- Orphan 55
- Nikola Tesla's Night of Terror
- Fugitive of the Judoon
- Can You Hear Me?
- The Timeless Children
- Revolution of the Daleks
- Once, Upon Time
- Village of the Angels
- Survivors of the Flux
- The Vanquishers
- Eve of the Daleks
- Legend of the Sea Devils
- The Power of the Doctor