| # | Title | Rating | Length |
|---|
| 1 | Episode Three, Opening Titles | | 0:32 |
| 2 | Episode Three, Scene 1: Station Platform, Monument | | 0:59 |
| 3 | Episode Three, Scene 2: Tunnel | | 0:56 |
| 4 | Episode Three, Scene 3: Ops Room, Goodge Street Fortress | | 0:58 |
| 5 | Episode Three, Scene 4: Common Room, Goodge Street Fortress | | 2:25 |
| 6 | Episode Three, Scene 5: Laboratory, Goodge Street Fortress | | 0:45 |
| 7 | Episode Three, Scene 6: Station Platform, St Paul's | | 0:43 |
| 8 | Episode Three, Scene 7: Ops Room, Goodge Street Fortress | | 1:00 |
| 9 | Episode Three, Scene 8: Laboratory, Goodge Street Fortress | | 1:13 |
| 10 | Episode Three, Scene 9: Tunnel (Straight) | | 0:50 |
| 11 | Episode Three, Scene 10: Common Room, Goodge Street Fortress | | 2:40 |
| 12 | Episode Three, Scene 11: Ops Room, Goodge Street Fortress | | 0:38 |
| 13 | Episode Three, Scene 12: Tunnel (Curved) | | 0:46 |
| 14 | Episode Three, Scene 13: Ops Room, Goodge Street Fortress | | 1:52 |
| 15 | Episode Three, Scene 14: Corridor And Main Door, Goodge Street Fortress | | 0:12 |
| 16 | Episode Three, Scene 15: Laboratory, Goodge Street Fortress | | 0:29 |
| 17 | Episode Three, Scene 16: Corridor, Goodge Street Fortress | | 0:13 |
| 18 | Episode Three, Scene 17: Tunnel (Straight) | | 0:12 |
| 19 | Episode Three, Scene 18: Laboratory, Goodge Street Fortress | | 0:17 |
| 20 | Episode Three, Scene 19: Corridor And Main Door, Goodge Street Fortress | | 0:29 |
| 21 | Episode Three, Scene 20: Ops Room, Goodge Street Fortress | | 0:43 |
| 22 | Episode Three, Scene 21: Corridor, Goodge Street Fortress | | 0:27 |
| 23 | Episode Three, Scene 22: Laboratory, Goodge Street Fortress | | 0:33 |
| 24 | Episode Three, Scene 23: Ops Room, Goodge Street Fortress | | 1:02 |
| 25 | Episode Three, Scene 24: Common Room, Goodge Street Fortress | | 1:08 |
| 26 | Episode Three, Scene 25: Corridor And Main Door, Goodge Street Fortress | | 0:16 |
| 27 | Episode Three, Scene 26: Common Room, Goodge Street Fortress | | 0:21 |
| 28 | Episode Three, Scene 27: Laboratory, Goodge Street Fortress | | 0:11 |
| 29 | Episode Three, Scene 28: Corridor And Main Door, Goodge Street Fortress | | 0:10 |
| 30 | Episode Three, Scene 29: Ops Room, Goodge Street Fortress | | 0:54 |
| 31 | Episode Four, Opening Titles | | 0:30 |
| 32 | Episode Four, Scene 1: Ops Room, Goodge Street Fortress | | 0:25 |
| 33 | Episode Four, Scene 2: Tunnel (Y-Section) | | 0:17 |
| 34 | Episode Four, Scene 3: Tunnel (Straight) | | 0:48 |
| 35 | Episode Four, Scene 4: Tunnel (Curved) | | 1:17 |
| 36 | Episode Four, Scene 5: Tunnel (Y-Section) | | 0:45 |
| 37 | Episode Four, Scene 6: Corridor And Main Door, Goodge Street Fortress | | 0:22 |
| 38 | Episode Four, Scene 7-9: Laboratory And Corridor, Goodge Street Fortress | | 2:12 |
| 39 | Episode Four, Scene 10: Ops Room, Goodge Street Fortress | | 2:42 |
| 40 | Episode Four, Scene 11: Common Room, Goodge Street Fortress | | 1:10 |
| 41 | Episode Four, Scene 12: Laboratory, Goodge Street Fortress | | 1:28 |
| 42 | Episode Four, Scene 13: Ops Room, Goodge Street Fortress | | 0:40 |
| 43 | Episode Four, Scene 14: Laboratory, Goodge Street Fortress | | 0:34 |
| 44 | Episode Four, Scene 15: Main Door | | 0:25 |
| 45 | Episode Four, Scene 16: Exterior Street | | 0:20 |
| 46 | Episode Four, Scene 17: Ops Room, Goodge Street Fortress | | 0:46 |
| 47 | Episode Four, Scene 18: Tunnel (Curved) | | 1:58 |
| 48 | Episode Four, Scene 19: Street, Covent Garden | | 3:21 |
| 49 | Episode Four, Scene 20: Electrical Shop, Street Level | | 1:07 |
| 50 | Episode Four, Scene 21: Ops Room, Goodge Street Fortress | | 0:24 |
| 51 | Episode Four, Scene 22: Interior Warehouse | | 0:49 |
| 52 | Episode Four, Scene 23: Laboratory, Goodge Street Fortress | | 2:07 |