Farm off Old Ross Road as Level 507 Farm
The Doctor works with Nardole to set up defenses for the people living on the farm while Bill tries to come to terms with her new condition. The farmhouse was constructed for filming.
Source: FPL Pasq—Twitter
“The Doctor Falls” Filming Locations
The Doctor and friends team up with the two Masters to save the people living on level 507 from the Cybermen.
Doctor Who episode “The Doctor Falls” was filmed in Cardiff in the United Kingdom.
Bute Street (between West Circle & West Bute) as Street near Hospital
The Cybermen march towards the hospital after being reprogramed by the Doctor.
Bute Street (between West Bute & A4119) as Taking Off
The new weaponized Cybermen take off towards floor 507.