Who Spy: Week Twenty Eight

"I like bananas. Bananas are good."
The Doctor's banana from The Doctor Dances.

Not everything goes according to plan.
On set in Room 802 from The Doctor Dances.

Julian Luxton, Pamela Humpreys, Terry Bartlett and Brian Grant (Director).
Filming for The Long Game.

Familiar sound effect.
Room 802 sound monitoring equipment from the Doctor Dances.

What is the terrible secret of room 801?
That it was really room 802? A set from The Doctor Dances.