ZKK

Background
ZKK is a documentary production company founded by Kathy O'Neil. Their documentaries usually deal with mature themes such as nudity, disorders such as anorexia, transexuality, and many more.

1st Logo (1992-2010)
Logo: Basically consists of the stylized, wide, and magenta text "ZKK" on a black background with "A" and "PRODUCTION" on top and underneath respectively.

Variants:
 * Like with other companies that co-produced shows for Channel 4, a split-screen variant exists.
 * In Channel 4 co-produced shows in the early 2000's, this logo was paired with Channel 4's.
 * Sometimes, the background has a very faint black-blue gradient.

Technique: None.

Music/Sounds: None or the ending theme of the program.

Availability: Was seen on numerous Channel 4 and 5 co-produced documentaries from this period. A few of these documentaries such as Skinny Kids and Texas Teenage Virgins are preserved on official YouTube channel with them preserving this logo. The black-blue gradient variant was seen on Skinny Kids and Is Diet Culture Destroying Our Children's Self-Esteem?.

2nd Logo (January 12, 2012)
Logo: This is another simple logo where the text is the same but in hot pink and Arial font.

Technique: None.

Music/Sounds: None.

Availability: Its only known appearance was on My Daughter the Teenage Nudist.