Lady Maltby arrives to see Captain Mainwaring in his office, as she is unable to acquire any petrol for her Rolls-Royce car, so is keen to see it used for the war effort.
She is carefully maintaining her class distinction, being very superior to Mainwaring, then catches sight of Sergeant Wilson, and greets him warmly as "Dear Arthur".
Mainwaring is very keen to use the vehicle as a staff car, so Private Frazer offers to respray it in camouflage cheaply.
Then the flash of Private Cheeseman's camera startles him, and he steadies himself with his hands against the Rolls-Royce, so that when he kisses the outraged Warden Hodges he ends up with black paint all over his face.
The same car was used by the character Audrey fforbes-Hamilton in the BBC's To The Manor Born, and in other British and Hollywood films.