Mr. Carruthers, the chief building inspector, comes to inspect Bob's team's work.
- Mr. Bernard Bentley
- Mr. Carruthers
- Spud (flashback)
- Travis (flashback; does not speak)
- Benny (flashback; does not speak)
- Robert (flashback; does not speak)
- Dorothy (flashback; does not speak)
- Angelo Sabatini (flashback; does not speak)
Original UK Cbeebies air date:
- Stock footage from Sir Muck, Muck's Convoy, Dizzy the Detective, Roley Brings the House Down, Two Scoops and Bob's Big Idea is used.
- This is the last episode of a few things:
- This is the last episode to use Stop Motion Animation and also the latest appearance of Sunflower Valley.
- This episode was the final time Wendy wears the red screwdriver she wore between Seasons 2-16.
- This is the last episode where Alan Marriott and Lachele Carl voices Scoop and Muck in the US dub, David Menkin and Sophie Aldred took over their respective roles.
- The last episode to take place in the original continuity.
- The last episode to be animated by HOT Animation.