| Episode cast overview, first billed only: |
 | Dany Cotton | - | Herself - London Fire Brigade Commissioner |
| Stuart Cundy | - | Himself - Metropolitan Police (as Commander Stuart Cundy) |
 | Sadiq Khan | - | Himself - Mayor of London |
| Nicholas Paget-Brown | - | Himself - Leader, Kensington and Chelsea Borough (as Councillor Nick Paget-Brown) |
| Wyre Davies | - | Himself - Correspondent |
| Tom Burridge | - | Himself - Correspondent |
| Helena Lee | - | Herself - Correspondent |
| Jane Dreaper | - | Herself - Correspondent |
| Ousama Itani | - | Himself - Local Resident |
| Geoff Wilkinson | - | Himself - Fire and Building Inspector |
| Matt Wrack | - | Himself - Fire Brigades Union (voice) |
| David Shukman | - | Himself - Science Editor |
| Sam Proctor | - | Herself - Eyewitness |
| Monica Bryant | - | Herself - Eyewitness |
| Norman Smith | - | Himself - Assistant Political Editor |
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