Closing Time Meaning

(Britain, figuratively) Used to suggest that a deadline for action is imminent.

Example: Used other than as an idiom: see closing,‎ time.
1995, GoldenEye
  No. You're supposed to die for me. By the way, I did think of asking you to join my little scheme, but somehow I knew that 007's loyalty was always to the mission — never to his friend. Closing time, James. Last call.