| Book | Selector | Unit |
| Sea Lion | Airfield Defence Reinforced Platoon (Regular) | Pickett-Hamilton Disappearing Pillbox |
| Sea Lion | Coastal Defence Reinforced Platoon (Home Guard) | Pickett-Hamilton Disappearing Pillbox |
| Sea Lion | Coastal Defence Reinforced Platoon (Regular) | Pickett-Hamilton Disappearing Pillbox |
