Talkback (1984-2006)

Background
Talkback Productions (also known as Talkback-UK or simply Talkback) was formed in 1981 by comedy duo Mel Smith and Griff Rhys Jones and it was one of UK's leading production companies. In July 2000, the company was sold to Pearson Television (which itself was sold and merged with CLT-UFA in 2000 to create the RTL Group and rebranded as FremantleMedia in 2001) for £62 million and was merged with Thames in 2003 to form Talkback Thames. On January 1, 2012, FremantleMedia UK split Talkback Thames into four companies, with Talkback focusing on comedy.

1st Logo (January 31, 1984-March 17, 2003)
Visuals: It's only an in-credit logo saying:

Serif TalkBack Serif

with "TalkBack" in a bigger and bolder font with gear-shaped holes in the "a"'s. Sometimes, it would have "For BBC TELEVISION" or "for CHANNEL FOUR" and a copyright stamp.

Variants:
 * Sometimes, this logo shares the screen with other logos (including the 1988 and 1997 BBC logos).
 * Sometimes, this logo would be placed outside the credits and have its own card.
 * On The Armando Iannucci Shows, the logo has a byline reading "A Pearson Television Company", the Talkback logo and "production" are lowercase, and an in-credit Channel 4 logo is used rather than "for Channel Four". Also, all are animated: Channel 4's logo fades in first, "talkback" flips in after that, and then the rest of the text fades in.
 * One variant reads "A Talkback Features Production".
 * In 2000, the logo was slightly modified with the lowercase "t" and "b". A byline was also added in 2001, reading "A FremantleMedia Company".
 * On House Doctor, the logo simply consists of the logo, the byline, and a bottom notice that reads "a talkback production for five".
 * On QI series B, the text "Serif", with "a" above "Quite Interesting", was added above the Talkback name. The text "~ uk" was also added to the logo and the background writing overlaps with it.
 * On The Day Today, the logo as well as its full notice is in one row.
 * On Smack the Pony, the logo is black.

Technique: Fading effects or none.

Audio: The ending theme of the programme or none.

Availability: Seen on such UK shows like Alias Smith and Jones, A Life in Pieces, Murder Most Horrid, Da Ali G Show (UK episodes only), Grand Designs and Never Mind the Buzzcocks, among others.

2nd Logo (February 9, 2003-June 9, 2006)
Visuals: On a white background with bits of green on several corners and the top after a bright light flashes at the beginning, we have the "talkback" name in green and in bold. Below it would have the "talkbackTHAMES" logo name below and the byline "Part of the FremantleMedia Group" (or "A FremantleMedia Company"), and sometimes below that, the copyright stamp to FremantleMedia.

Trivia: Along with Thames, this logo was used during the Talkback Thames era before the company had its own logo in 2006.

Variants:
 * Sometimes, the logo is completely still.
 * Sometimes, this logo shares the screen with other logos (including the 1997 BBC and 1999 Channel 4 "Square" logos).
 * Some co-productions would have "PRODUCED BY" above and "for (name/logo of network)" below the Talkback name.
 * Sometimes, the Talkback name would read "talkback~uk".
 * On QI, the text "Serif" was added above Talkback name and the background has math scribbles.
 * On series C, the "a" in "A Quite Interesting" is on the same row as the other words and "Serif" was added underneath the logo.

Technique: Fading effects.

Audio: The ending theme of the programme or none.

Availability: Seen on reruns of Da Ali G Show (UK episodes), Nathan Barley, The Sex Inspectors, Nevermind the Buzzcocks, QI, early episodes of How Clean is Your House? and Monkey Dust, among others.