Rachel and Jason are in the chair this week as they team up with top cosmetic dentist James Russell to put the latest electronic toothbrushes through their paces. Polly comes face-to-face with the Mantis, the biggest all-terrain hexapod robot in the world. Jon Bentley is in Amsterdam testing out the latest batch of Android smartphones. Mark Foster, one of the most successful British swimmers of all time, tests three of the latest waterproof MP3 players designed for swimmers. Finally, why do Jason and Rachel end up taking a couple of drills to a tandem bike?
| Name | Type | Role | |
|---|---|---|---|
| Mark Foster | Guest Star |