Sherston Software

Background
Sherston Software (also known as Sherston Publishing Group), was a British software publisher, producing educational games and learning resources. Two teachers, Bill and Lou Bonham, started making games for the BBC Micro in 1983 and set up a limited company in 1991. In 2003, Bill and Lou sold Sherston to a four-man management team, which led to the company being called Sherston Publishing Group. Sherston Software didn't used a proper logo until 1996.

1st Logo (1993)
Visuals: There is the Sherston logo in gold with a diagonal oval behind it. Next to it are the Chatsworth Television and Digital Jellyfish Design logos.

Technique: None.

Audio: The opening theme of the game.

Availability: Seen only on the video game adaptation of The Crystal Maze.

2nd Logo (1996-1998?)
Visuals: Unknown.

Technique: Simple Flash animation.

Audio: Unknown.

Availability: Seen on games they published from the era.

3rd Logo (1999-2002)
Visuals: Unknown.

Technique: Flash animation

Audio: The second music from before.

Availability: Seen on games they published from the era.

4th Logo (2001-2003)
Visuals: The abstract "S" symbol with the text "Sherston" next to it fading onto a black background.

Technique: None.

Audio: None.

Availability: Seen on games they published from the era.

5th Logo (2004-2007)
Visuals: A navy blue rectangle with the text "Sherston" with four circles in yellow, red, green and blue next to it fading onto a white background, then fading out later.

Variant: A few other variants exist.

Technique: Depends on the variant, but usually none.

Audio: None.

Availability: Seen on games they published from the era.