The original idents used when the station launched were slides with the words BBC TELEVISION SERVICE written in a stylised way.
Upon war being declared on 1 September 1939, the Television Service was closed down, with all BBC output being made on Radio instead.
Many of the staff at BBC Television went to work in the forces, or on the Chain Home Radar System.
It was a model made of piano wire, brass and flashing lights, created by Abram Games.
Scotland's variation featured a shield with the Scottish flag inside replacing the eye and world.
The BBC North variation included the legend 'North of England' within this eye with 'BBC' and 'News' written between the wings above and below respectively.
As part of the look, captions were also made featuring the Bat's Wings outline on black captions, used to introduce the next programme, programmes for Schools and Colleges[5] and even the testcards used early in the BBC's existence were updated with the Bat's Wings.
[2] By the late 1950s and with the introduction of their new logo of square boxes with slanted letters a number of things changed.
[4] This was changed again on 8 October 1960 to a digital clock, featuring the BBC logo above a line, with the 'TV' box and time below.
This was accompanied by the previous clock used in 1958 with modifications made, namely the logo updated and colours changed to greys.
The globe was made smaller, surrounded by a thick black circle and encompassed in a large white box on a grey background.