Dyson lorries are used to help whenever there is an accident where the rails can't reach. They are also used for carrying rolling stock and engines. One was once used to carry Duke to the Skarloey Railway.
Dyson lorries resemble AEC Hanson lorries or Foden lorries which were once a common sight around railway yards. The ERTL model of the Dyson lorry inaccurately represents a Ford pick-up lorry.
- Season 4 - Sleeping Beauty, Thomas and the Special Letter, Bulls Eyes and Special Attraction
- Season 5 - Cranky Bugs, Horrid Lorry, James and the Trouble with Trees, Haunted Henry, Double Teething Troubles, Thomas and the Rumours, Sir Topham Hatt's Holiday, A Surprise for Percy, Busy Going Backwards and Rusty and the Boulder
- Season 6 - No Sleep for Cranky (stock footage)
- ERTL (discontinued; as "Dyson Low Loader")