The eyes of the world turn to Britain, as the 456 announce, 'We are here'. As a pillar of fire descends upon London, the members of Torchwood must battle to protect their own families, as the fight gets personal. But will Clem's memories destroy everything?
| Name | Type | Role | |
|---|---|---|---|
| James Moran | Writer | ||
| Russell T Davies | Writer | ||
| Peter Capaldi | Guest Star | John Frobisher | |
| Simon Poland | Guest Star | 456 | |
| Rachel Ferjani | Guest Star | Parliamentary Secretary | |
| Lucy Cohu | Guest Star | Alice Carter | |
| Bear McCausland | Guest Star | Steven Carter | |
| Charles Abomeli | Guest Star | Colonel Oduya | |
| Paul Copley | Guest Star | Clement McDonald | |
| Gregory Ferguson | Guest Star | Young Clem | |
| Christopher James | Guest Star | Press Officer | |
| Ian Gelder | Guest Star | Mr Dekker | |
| Julia Joyce | Guest Star | Holly Frobisher | |
| Katy Wix | Guest Star | Rhiannon Davies | |
| Nicholas Farrell | Guest Star | Brian Green | |
| Louise Minchin | Guest Star | Newsreader | |
| Ben Loyd-Holmes | Guest Star | Operative | |
| Tom Price | Guest Star | PC Andy | |
| Madeleine Rakic-Platt | Guest Star | Lilly Frobisher | |
| Rhodri Lewis | Guest Star | Johnny Davies | |
| Colin McFarlane | Guest Star | General Pierce | |
| Anthony Debaeck | Guest Star | French Newsreader | |
| Luke Perry | Guest Star | David Davies | |
| Cush Jumbo | Guest Star | Lois Habiba | |
| Patrice Etienne | Guest Star | Sandwich Shop Man | |
| Hilary Maclean | Guest Star | Anna Frobisher | |
| Susan Brown | Guest Star | Bridget Spears | |
| Lachele Carl | Guest Star | Trinity Wells | |
| Aimee Davies | Guest Star | Mica Davies | |
| Liz May Brice | Guest Star | Johnson | |
| Euros Lyn | Director |