With Frontier in Space out the way on the Pertwee watchathon, it's a visit to the Southbank centre, standing in for a futuristic prison in the 26th century appearing in episode 2. In recent years access to the upper areas is restricted, but is currently open as a temporary garden and cafe have been opened on the roof.
The establishing shot immediately gives away the location for anyone familiar with the area. Generally it is largely the same but some walkways have been removed including the one in the foreground. Various signs make it appear more colourful.
The first scenes are set for the Doctor and Jo being moved from their prison cell and being freed by Draconians.
A longer shot on the walkway, probably the highest publicly accessible.
The Doctor and Jo actually emerge at ground level to the right of the above photos. A Draconian takes aim...
In the confusion, Jo is separated from the Doctor and runs up some steps on the west of the Hayward Gallery.
Just around the corner she is again captured, a common theme in this story. Here the steps are heavily obscured by trees as part of the gardens on the roof.
After a forced visit to the Draconian embassy, the Doctor escapes and ends up again in his cell at the Southbank centre. This time, the Ogrons attack to break them out.
Guards have their attention drawn on the east side of the Hayward Gallery.
Looking down the steps, now painted bright red, an ogron is seen taking on the shape of a Draconian.
Ogrons bound over the steps...
And attack the west side of the gallery.
Humans wait outside the same steps as seen earlier, when Jo was recaptured, for the Doctor to burst out trying to escape the ogrons.
Lots more garden things fill the scene which is still recognisable, background buildings have changed somewhat. The Doctor and Jo run down the steps, he points off camera and they run off screen...
To immediately crouch by the very steps they just ran from. The production tries hard to make the location look much larger and more complex than it actually is. The Doctor and Jo are again recaptured by the steps. These steps have been closed off for a number of years but are identifiable behind all the fencing. Escape, capture, escape, capture, episode two and the start of episode three heavily feature the Southbank centre as a futuristic prison on a fascist Earth. It's large concrete structure suits the setting perfectly, if being a little obvious as a London landmark.