Netflix is about to remove a phenomenal spy thriller movie from its service

Based on a classic novel, the film's ensemble cast includes Colin Firth, Stephen Graham and Tom Hardy.

Set in 1970s England, the film sees the head of MI6, Control (John Hurt), dispatch an agent (Mark Strong) to meet with a Hungarian general who knows the identity of a Soviet spy in the organisation's ranks.

The mission goes wrong, however, and the general dies before he can reveal the information.

As such, veteran agent George Smiley (Gary Oldman) is called back from forced retirement to ferret out the mole and stop the flow of vital British secrets to the Russians.

Also co-starring Benedict Cumberbatch, Ciarán Hinds, Colin Firth, Kathy Burke, Stephen Graham, Toby Jones and Tom Hardy, the movie was directed by Tomas Alfredson (Let the Right One In).

Boasting a flawless cast, a compellingly dense and intricate plot and an atmosphere so chilly and sinister it practically seeps into viewers' bones, Tinker Tailor Soldier Spy is easily one of the best spy thrillers of the 21st century and perhaps ever.

If you'd like to check the film out on Netflix in the UK and Ireland, however, you'd better do so quickly.

A message when you search for the spy thriller on the streaming giant reads: "Last day to watch on Netflix: 6 July."

You can also watch the movie on Prime Video.