Peter Capaldi and the Zygons have been spotted on location for Friday’s shoot. Wales Online have posted a video and pics here.
They report:
The Time Lord took to the slide and swings at Canal Park in Butetown when the actors and crew returned to one of their old haunts. Capaldi was seen rehearsing a scene for episode 7 of series 9 before he was joined by schoolchildren taking on the roles of extras during the early morning shoot.
Eventually it appears the children the Doctor encounters are in fact Zygons. Another great gallery here:
Ingrid Oliver spotted as Osgood again, but this time with a costume tweak:
UPDATE: Peter Capaldi and Jenna Coleman were sighted filming a scene together on Monday, once again back at Canal Park.
Ingrid Oliver was also on location. A double joined her dressed in different clothes suggesting one of the Osgoods is a Zygon.
It is thought they were all shooting the final scenes of the two-parter with the Doctor and Clara both saying goodbye to Osgood and then leaving in the TARDIS.
See a gallery and video here and another gallery here.