The read through for The Zygon Invasion took place on Wednesday, 29 April, 2015. Filming started on Tuesday, 5 May and included studio shoots plus location work in Wales and Fuerteventura.

The Zygon Invasion When she realises Kate has no back-up, Norlander reveals that she is a Zygon. Bonnie prepares to shoot down the Doctor’s presidential plane.