Celador

Background
Celador was a British television production company that was formed in 1981 by producer Paul Smith. It was then expanded into film, television and licensing, and then an international division that handed international versions of game shows like Who Wants to Be a Millionaire? and Winning Lines. In 2006, they sold off their international division to Netherlands-based 2waytraffic and was reincorporated as "2waytraffic International" which was later acquired by Sony Pictures Television on June 24, 2008, while it's production arm became CPL Productions in 2009, and was later acquired by Red Arrow Entertainment Group (later Red Arrow Studios) in 2012.

1st Logo (January 9, 1984-1993)
Logo: On a black background, we pan out the spinning letters that were connected together and flashes until it stops flashing. Then the pieces spread out in order to reveal the white-blue gradient words "celador" in a futuristic font. The words "a" fades in at the top left of the "celador" text while "production" is at the bottom right below the text. Below it was a copyright disclaimer.

Variants:
 * Sometimes, the logo is shortened starting from the spreading animation.
 * Sometimes, the logo freezes after "celador" finishes spreading then we see the white text "A Celador Production" and the station info is shown below like either BBC, Carlton Television or Thames.
 * A Christmas version of the logo exists. Here, the logo is shown on the bottom behind a sad snowman on a grey-white gradient background with snowflakes falling. Then the snowman turns happy and above it was "Christmas Entertainment for (BBC/Thames) Television from" and below it was a copyright stamp.
 * On Television Scrabble, a print version is used where it shared disclaimers with Callendar/Primetime Television and Channel 4 Television.

Technique: The spinning, panning and the spreading.

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

Availability: Seen on early Celador productions like Comedians Do It on Stage, Everybody's Equal, Wow Fab Groovy, Wild Oats, Carrott's Commercial Breakdown and Crazy Comparisons.

2nd Logo (1992-1999)
Logo: On a black background, we see the connected pieces of the Celador logo in light blue piece by piece when it's spinning. Once the logo is done we see the white text "A Celador Production" fades in below the logo.

Variants:
 * Sometimes, the station info for BBC or Carlton Television/ITV is shown below the logo along with the copyright disclaimer.
 * From 1995 to 1996 for some shows produced for Carlton, this logo is shared with the 1995 Carlton UK Productions logo.
 * There is a still version of this logo.
 * A Christmas version of this logo exists where its basically the same as the last logo's Christmas variant, only this time, we see the text above the snowman reading "Christmas Entertainment for" and either the 1988 BBC logo or the Carlton logo, and the word "from" below the logos and the Celador's logo animation was updated.
 * A still version of the Christmas variant exists.
 * On programmes co-produced with Carlton UK Productions, this logo appears within said company's logo.
 * On The Detectives, the logo includes the 1988 BBC logo and a BBC copyright notice underneath with "A Celador Production for" above it.

Technique: The spinning and spreading then the text fading in.

Music/Sounds: The ending theme of the show.

Availability:
 * It was last seen on at the end of Celador's shows from the 1990s such as The Detectives, Hypnotic World of Paul McKeena, Talking Telephone Numbers and early episodes of the award-winning game show Who Wants to Be a Millionaire?, of which Challenge kept this logo.
 * The Carlton UK Productions variant was seen on Talking Telephone Numbers and The Hypnotic World of Paul McKenna.
 * The Christmas version of this logo with the 1988 BBC logo was also seen on One Jasper Carrot as well.

3rd Logo (1999-2002)
Logo: On a black or a black-blue moving gradient background, we see some letters spinning like wheels in which eventually to reveal the marine coloured text "celador" from the previous two logos and a line then flashes from behind the text.

Variants:
 * The spinning variation appeared on the first two PlayStation adaptations of Who Wants to Be a Millionaire? in the UK, as well as DreamCast and PAL versions.
 * On all other PC and PlayStation versions, as well as the Game Boy Color, version the logo is in black and white and it simply fades in.
 * Sometimes, this logo is still like the last logo.
 * Sometimes, the words "A Celador Production" is shown below the logo.
 * On original ITV prints of Who Wants to Be a Millionaire?, the text "A Celador Production" is smaller. Then the text disappears and the light forms the show's title and the timeslot is shown spreading out via a light effect is shown underneath the logo.
 * On shows co-produced with the BBC, like the Jasper Carrott specials and Winning Lines, the logo is shifted to the top on a black background. The text "A Celador Production" is shown below the logo and underneath is the word "for" and the 1997 BBC logo. A BBC copyright is shown below the logo.

Technique: The spinning letters.

Music/Sounds: A cue from the Who Wants to Be a Millionaire? soundtrack, from the end of the track, "Explain the Rules", composed by Keith Strachan and Matthew Strachan.

Music/Sounds Variants:
 * The black and white variant uses a 5 note synth theme transitioning from the Disney Interactive Studios/Buena Vista Interactive theme used as part of the games.
 * Sometimes, the ending theme of the show plays over the logo or it's silent.
 * Original ABC airings of Who Wants to Be a Millionaire and CBS airings of Winning Lines used the generic theme.

Availability:
 * The normal logo with fanfare is seen on the PC, Dreamcast (UK and France only), DVD and PlayStation adaptations of Who Wants to Be a Millionaire?. It also appeared on the DVD release of Who Wants to Be a Millionaire? Magic Moments and More.
 * It was usually shown up at the end of Who Wants to Be a Millionaire?, including the original British version, the Australian version, and at the end of 1999–2002 American Regis Philbin-era episodes when it was shown on ABC as well as The People Versus and Winning Lines including the original British version and the American version with Dick Clark on CBS, and several Jasper Carrot specials.

4th Logo (2002-2009)
Logo: On a dark blue/dark sapphire/black gradient background, we see curvy lines just like a snake, then it draws the Celador logo from the previous logos, although this time it's much bolder and in a blue gradient texture.

Variants:
 * Sometimes, "A Celador production" is shown below the logo.
 * On BBC co-productions with the company, the word "for", the BBC logo and the copyright disclaimer is shown below the logo.
 * Sometimes, the logo is still just like the last two logos.
 * On Tonight: Major Fraud the logo appears in-credit and it shares the screen with the Granada Television logo.
 * There is an "international" version with the corresponding word added and there's an arc below it that almost resembles the Pearson Television logo.
 * Sometimes, either "INTERACTIVE" (which has the background in pitch blue) or "KIDS" is seen underneath the arc.
 * Sometimes, a print version of this logo is used on DVD games.

Technique: The drawing of the logo. None for the still version.

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

Availability: Common.
 * It was last seen on Who Wants to Be a Millionaire? episodes from 2002–2007 including the original UK version, the US version with Meredith Vieira in first-run syndication and on DVD games.
 * It also appeared on later episodes of the original UK version of Winning Lines as well as other shows such as All About Me, British Brightest Kid, Grand Slam and the revival of Commercial Breakdown.
 * The international version was seen on Roobarb and Custard Too, episodes of the original UK version of Who Wants to Be a Millionaire? from 2006-2007 and on DVD games of the latter.