Swarm – Sam Spruell
Azure – Rochenda Sandall
Williamson – Steve Oram
Professor Jericho – Kevin McNally
Karvanista – Craige Els
Bel – Thaddea Graham
Kate Stewart – Jemma Redgrave
Sontaran Commander Stenck – Jonathan Watson
Grand Serpent – Craig Parkinson
Senstarg/Shallo/Kragar – Dan Starkey
Claire Brown – Annabel Scholey
Vinder – Jacob Anderson
Diane – Nadia Albina
Ood – Simon Carew
Voice of the Ood – Silas Carson
Passenger – Jonny Mathers
Stevie (Grand Serpent Victim) – Sonny Walker
Voice of the Daleks/Cybermen – Nicholas Briggs
Time – Sam Spruell
Time – Jodie Whittaker
General production staff
Head of Production – Jacquie Glanville
Executive Producer for the BBC – Ben Irving
Production Executive – Tracie Simpson
Line Producer – Steffan Morris
Associate Producer – Sheena Bucktowonsing
Production Manager – Delmi Thomas
Supervising Location Manager – Iwan Roberts
Location Manager – Gareth Roberts
Unit Manager – Kyle Yates
Production Co-ordinator – Sandra Cosfeld
Assistant Production Co-ordinator – Ellie Simmons
Production Secretary – Sam Milletti
Executive Assistant – Caroline Cook
Production Office Runners – Ellie Hilton, Chris Reynolds
Unit Drivers – Paul Watkins, Jolyon Davey, Steve Darwent
Unit Medics – Glyn Evans, Andy Jones
Business Affairs – Elaine Evans, Kyle Parsons, Steve Robson
Production Accountant – Rhys Evans
Assistant Accountants – Kate Barber-Williams, Marta Toczko
Cast Payroll Accountant – Helen Searle
Contracts Booker – Leanne Bowcott
Crew Payroll Accountant – Bethan Wray
Covid Assistants – Joseph Fletcher, Jonny Tarr
Covid Testing Schedulers – Etty Stanley, Leila Arada
Camera and lighting department
1st Assistant Director – Charles Curran
2nd Assistant Director – Lauren Pate
3rd Assistant Director – Jennifer Day
Assistant Directors – Jac Lewis, Laura Thompson, Tom May
Script Supervisor – Nicki Coles
Camera Operator – Mark McQuoid ACO
Camera Trainees – Adam Clewes, Olga Walus
Focus Pullers – Jonathan Vidgen, Matt Hillier
Key Grip – John Robinson
Assistant Grips – Matt Clark, Marc Marshall
Camera Assistants – Dan Patounas, Nic Yates, Evangeline Davies
Gaffer – Mark Hutchings
Rigging Gaffer – Andy Gardiner
Best Boy – Gareth Sheldon
Electricians – Gawain Nash, Stuart Gale, Matthew Hutchings, Rhodri Moses, Owen Hashimi
Art department
Supervising Art Director – Ifan Lewis
Construction Art Director – Julia Jones
Art Department Assistant – Laura Honeybun
Art Department Co-ordinator – Hannah Miller
Production Buyer – Billie Blue Williams
Petty Cash Buyer – Sally Sharp
Set Decorators – Chris House, Vicki Male
Action Props Buyer – Milannah Faith Summers
Concept Artist – Louis Knight
Graphic Designer – Stephen Fielding
Trainee Graphic Designer – Lois Drage
Standby Props – Matthew Ireland, Lewis Reece, Ryan Milton, Robert Alexander
Standby Carpenter – Colm Barrett
Prop Hands – Dewi Thomas, John Thomas, Liv Cheung, Tom Major
Rigging – Shadow Scaffolding
Standby Rigger – Alex Herbert
Scenic Painters – Rachel Willsher, Alex Morgan, Ana Marlene Ribeiro
HOD Painter – Scenic Steve
Painters – Mark Reece, Alison Drane
Storeman – Lucy Hookings
Prop Master – Paul Aitken
Props Chargehand – Trystan Howell
Props Driver – Paul Carmichael
Construction Manager – David Hobbs
Construction Assistant – Matthew Pike
Workshop Manager – Mark Hill
Workshop Assistant – Chris Slocombe
Construction Chargehands – Dean Tucker, Jonathan Tylke
Construction Driver – Darren Bousie
CNC Programmer – Kristian Tucker
Plasterer – Jason Tylke
Practical Electricians – Rob Hearne, Matthew Dunford
Draughtspersons – Lauren Harper, James Dyer
Trainee Draughtsperson – Rachel Ellis
Carpenters – Chris Daniels, Campbell Fraser, Matt Gronow, Charlie Wright, Marcus Scholl, Ben McDonald, Dafydd Llewelyn Jones, Mike Venables, Gemma Spence, Simon Pothecary, David Warner
Costume department
Costume Supervisor – Grace Brooks
Assistant Costume Designer – Simon Marks
Costume Cutter/Maker – Brighde Penn
Creature Costume Maker – Robert Allsopp & Associates
Costume Assistants – Ian Fowler, Jenny Tindle
Costume Trainee – Yiwen Lin
Make-up and prosthetics
Make-up Supervisor – Emma Cowen
Make-up Artists – Amy Riley, Angharad Walsh, India Jones
Junior Make-up Artist – Nikki Salih
Prosthetics Trainee – Nyle Pritchard-Trew
Prosthetics Designer – Danny Marie Elias
Prosthetics Artist – Amy Paul
Junior Prosthetics Artists – Elly Suggit, Ashley Lovett
Movement
Stunt Co-ordinator – Crispin Layfield
Stunt Performers – Christina Low, Ellie Keighley, Guy List, Jodie Saunders, Yusuf Chaudhri
Casting
Casting Associate – Ri McDaid-Wren
Casting Assistant – Ray B├╢hm
General post-production staff
Post-production Producer – Ceres Doyle
Post-production Supervisor – Liv Duffin
Assistant Editors – Brooke Taylor Michael, Joseph Keirle
On-line Editor – Christine Kelly
Assistant On-line Editor – Luke Stanbury
Special and visual effects
Additional VFX – Martyn Western, Rory Williams, Zodiak VFX, The 2D Workshop, Ben Pickles
VFX Editor – Emily Lawrence
Assistant VFX Editor – Alastair Gray
Colourist – Gareth Spensley
Head Model Maker – Lee Radford
Model Makers – Penny Howarth, Lee Price
Sound
Sound Recordist – Deian Llyr Humphreys AMPS
Dubbing Mixers – Natasha Haycocks, Howard Bargroff
Sound Maintenance Engineers – Christopher Goding, Joe Malone
Sound Designer – Harry Barnes
Dialogue Editor – Darran Clement
ADR Editor – Matthew Cox
Foley – Bang Post Production
Music Editor – Neil Stemp
All threads converge as the Doctor confronts Swarm and Azure. The Flux is partially contained, but significant damage to the universe remains. The Doctor uses manipulation and strategy across multiple timelines to defeat the threat. However, the DivisionΓÇÖs influence is revealed to be ongoing, and the Doctor is drawn further into her forgotten origins.
The Doctor and her allies execute a complex plan to defeat the Flux and its creators, the Ravagers, bringing the crisis to an end.
The Doctor uses a combination of strategy, division technology, and multiple versions of herself to contain and reverse the Flux.
The Ravagers are ultimately trapped and neutralized, ending their threat to the universe.
The companions each play important roles in different parts of the plan, contributing to the overall success.
The episode explores teamwork, sacrifice, resolution, and the consequences of large scale conflict.