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.

Doctor Who (2005–2022) Series 9, The Zygon Invasion Looking back on The Zygon Invasion The Zygons have been living in secret among us on Earth, unknown and unseen… until now!