Harriet Ambrose, a government technician, is travelling from London to Sheffield, aware of a pending cataclysm. As the train she is on enters a tunnel, a meteorite the size of Birmingham strikes the Earth.
| Name | Type | Role | |
|---|---|---|---|
| Matthew Graham | Writer | ||
| Josh Moran | Guest Star | ||
| Justin Ellery | Guest Star | ||
| Abigail Hayes | Guest Star | ||
| Robert Dunn | Guest Star | ||
| John Flitcroft | Guest Star | ||
| Roger Bingham | Guest Star | ||
| Chris Hoyle | Guest Star | ||
| Stuart Orme | Director |