Channel 5 (first era)
Channel 5 began transmission on 30 March 1997. The original identity was developed by Wolff Olins for the retuning campaign that preceded the channel's launch. The identity used on screen was developed by Silver Hammer from California, USA.
Channel 5 was renamed Five on 16 September 2002. The rebrand was created by the agency Spin, who has been redesigning Channel 4's logo from 1999. A set of idents, similar to the original ones, was launched in April 2004. A new look was launched later in November. This time the logo would appear as part of the idents, instead of just superimposed. The rebrand was taken care of by Devilfish.
The final set with this logo was launched on 23 January 2006 but didn't actually use the logo in them. Instead, various words connected to the ident were shown in the same font as the logo. The idents were created by BB/Saunders. New versions of the "words" idents came about in January 2007, with all the words replaced by "five".
When the new logo has occurred on 6 October 2008, Five US would continue to use the old logo until/before it got renamed Five USA on 16 February 2009.
The new look was introduced on 6 October 2008. The design agency behind the rebrand is DixonBaxi. Five US, however, continued to use the 2002-2008 logo until/before it got renamed to Five USA in 2009.
Channel 5 (second era)
Following the sale of the Channel 5 group from the RTL Group to Northern & Shell, the channels were rebranded. Five was once again renamed back to Channel 5 since it's launch in 30 March, 1997 on 14 February 2011. The new logo is a circle surrounding the 5. It is a bit similar to the logo of The 5 Network introduced the previous year, and a similar logo would later be used in the new logo for the ABC (USA) affiliate, WEWS-TV, replacing the old logo starting in mid-2016.
No logo appears on new idents as the five entities appear, that the logo appear separately on break bumpers, and on promos and end-boards instead.
It has been criticised for looking a lot like the both Channel 4 logo and Channel 7 (Australia) logo.
In December 4th, 2019, Channel 5 temporarily rebranded and remaned CBS UK, following the merger of Viacom and CBS Corporation to ViacomCBS. It uses the USA counterpart logo.