BBC Four

1st Logo (March 2, 2002-September 10, 2005)
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Logo: On a black background, there are CGI shapes, usually having purple or blue lights, that react to the music and the voice of the announcer. The BBC Four logo (a black box with the BBC logo at the top and "FOUR" in Gill Sans at the bottom) is on the bottom right corner.

FX/SFX: The shapes reacting to the music.

Music/Sounds: Depends on the variant.

Availability: TBA.

Editor's Note: As this ident's animation was synced to the audio of the announcer and/or music, it stands out with the fact no two idents were never exactly the same.

2nd Logo (September 10, 2005-2021)
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Logo: We see the BBC Four logo from before, but this time against random footage. One of these consists of a lake with ripples appearing in the water and in the sky.

FX/SFX: Live action.

Music/Sounds: The lake variant has loud synth squeaks, and ends with a guitar note.

Availability: Current, being used for over 15 years as of January 2021, making it one of the most long-lived idents seen on British TV.

Editor's Note: None.