The beloved Crawleys and their intrepid staff prepare for the most important moment of their lives. A royal visit from the King and Queen of England will unleash scandal, romance and intrigue that will leave the future of Downton hanging in the balance.
| Writing | Julian Fellowes | Screenplay |
| Production | Gareth Neame | Producer |
| Production | Julian Fellowes | Producer |
| Production | Liz Trubridge | Producer |
| Production | Brian Percival | Executive Producer |
| Directing | Michael Engler | Director |
| Writing | Julian Fellowes | Characters |
| Production | Nigel Marchant | Executive Producer |
| Sound | John Lunn | Original Music Composer |
| Camera | Ben Smithard | Director of Photography |
| Editing | Mark Day | Editor |
| Production | Jill Trevellick | Casting Director |
| Art | Donal Woods | Production Design |
| Art | Simon Walker | Art Direction |
| Costume & Make-Up | Anna Mary Scott Robbins | Costume Design |
| Production | Mark Hubbard | Co-Producer |
| Costume & Make-Up | Annette Field | Makeup & Hair |
| Costume & Make-Up | Anne Oldham | Makeup & Hair |
