Lydstep Flats as Clara's Flat
Clara tries to thwart Zygon!Clara while trapped inside her own mind.
Source: The Doctor Who Locations Guide
“The Zygon Inversion” Filming Locations
The Doctor and Osgood investigate the Zygon plan while Clara fights her doppelgänger from inside her own mind.
Doctor Who episode “The Zygon Inversion” was filmed in Cardiff in the United Kingdom.
Maelfa Shopping Centre as Fleet Estate
Zygon!Clara transforms another Zygon and films it, and later Osgood and the Doctor arrive to investigate.
Source: The Doctor Who Locations Guide
Watch House Bay as Crash Site
Osgood wakes up on the beach after escaping the exploding plane and finds the Doctor nearby.
Old Knap Swimming Pool as Getting Clara's Text
The Doctor gets a strange text from Clara's phone and Osgood convinces him that Clara is still alive.
Source: The Doctor Who Locations Guide
Custom House as UNIT Safe House (interior)
Zygon!Clara gets the Osgoods' laptop from a safe and then talks to the Doctor on the phone.
Source: The Doctor Who Locations Guide
Lakeside (between Crosshill and end) as Stealing Van
The Doctor are surrounded by Zygon controlled police officers and steal a van.
Western Avenue (between Mill & bridge) as Driving
The Doctor and Osgood drive to the estate where the text was sent from.
Canal Park as Brockwell Park
Clara and the Doctor return to the TARDIS and say goodbye to Osgood.
Source: The Doctor Who Locations Guide