Their Finest Hour: The Battle of Britain is a World War II combat flight simulation game by Lawrence Holland, released in October 1989[1] for the Amiga, Atari ST and MS-DOS systems.

Their Finest Hour is a simulation of the Royal Air Force and German Luftwaffe aircraft during the Battle of Britain from July to September 1940.

'"[3] In the June 1990 edition of Games International (Issue 15), Brian Walker admired the packaging, commenting that it was "as handsome as the planes [...] the book (it's not just a manual) that accompanies it sets standards that others will have to be judged against."

Walker concluded by giving the game a perfect rating of 10 out of 10 for gameplay and 9 out of 10 for graphics, saying, "Though we live in an world of junk [...] there's room for such an outstanding production such as this.

It praised the graphics, sound card audio, and documentation, while mildly criticizing the controls when not using a mouse, and concluded that the game would appeal to both action and wargame players.