Slitheen and The Doctor in “World War Three”

[disguised as General Asquith] Under the jurisdiction of the Emergency Protocols, I authorize you to execute this man!

Ah, well, now, you see, uh, the thing is, if I was you, if I was gonna, uh, execute someone by backing them against the wall, between you and me, a little word of advice: [there is a ping and lift door slides open behind the Doctor] don't stand him against the lift! [he steps backwards and the lift door closes]