Sign off routines in the United Kingdom

In the United Kingdom, closedowns originally took place frequently during the daytime, and sometimes only for a few hours at a time. This was due initially to Government-imposed restrictions on daytime broadcasting hours, and later, budgetary constrictions. The eventual relaxation of these rules meant that afternoon closedowns ceased permanently on the ITV network in October 1972. The BBC took a long time to abandon the practice, and did not commence a full daytime service until the autumn of 1986.

A full night-time closedown sequence on British television might typically contain information about the following day's schedule, perhaps a weather forecast and/or a news update, possibly a Public Information Film and finally, a look at the station clock and the national anthem.

BBC

• On BBC One, the sequence was that as follows - tomorrow evening's schedule, the national weather forecast, a Public Information Film (Monday to Thursday nights only) and finally, the clock which led straight into a rendition of the National Anthem (God Save the Queen), played out over the ident. For many years, BBC One Scotland, Wales and Northern Ireland also signed off with a late news bulletin & local weather forecast read off-screen by the evening continuity announcer. BBC One's last closedown took place on the morning of Sunday 9 November 1997. The BBC News Channel has filled the early hours since.
• On BBC Two, a look at tomorrow evening's schedule was followed by a closing announcement over the station clock. BBC2 never closed with the National Anthem and the clock just faded to black following the closing announcement, although picture montages accompanied by easy listening music were occasionally utilised. On nights in which Open University programmes were the last programmes on that night, the OU ident would have been played at closedown, followed by the usual fade to black, however, this procedure would have been discontinued when The Learning Zone started airing OU programmes during the night. BBC Two is the last national British terrestrial channel to still close at night.
• In the UK, BBC Radio 4 does "close down" in a sense, at just before 1 am with a rendition of the National Anthem (God Save the Queen). While they do not produce any original programming during their "off-air" hours, audio from the BBC World Service is provided. BBC Asian Network and almost all of the BBC's local stations have an off-hours overnight simulcast - in this case, with BBC Radio 5 Live.

ITV

• Grampian, Scottish, UTV, Tyne Tees, ATV, HTV, Anglia, LWT, Channel, Southern and its successor TVS and Westward and its successor TSW, closed transmission with God Save the Queen - mainly over scenes of the Royal Family. HTV Wales also played Hen Wlad Fy Nhadau in addition to GSTQ. ATV chose to use a version of the national anthem played on a church organ over the station clock whereas other stations chose to utilise traditional band arrangements.
• Granada and Central played out with special arrangements of their station themes. TSW also used their station theme That's Soul, Write as part of their closing sequence. Thames played either easy listening, popular or instrumental library music over a programme menu and the clock. Scottish also used various pieces of library music for playout during a rundown of programmes for the next day. Border and Yorkshire chose to simply fade out following the closedown announcement accompanied by the station clock.
• Grampian, Ulster and Border also signed off with late regional news bulletins read by the duty announcer. For a time, a farming news bulletin, Farming Brief, ran as part of TVS's closing sequence. Most regions also signed off with a weather forecast whilst Westward and TSW also provided a Shipping Forecast. Westward & LWT also occasionally aired short bumpers of Loeki - a cartoon lion whose adventures had bookended the advert breaks on Dutch television channel STER since the early 1970s - prior to switching off the main transmission stream. Some regions (namely Central, Granada, LWT, Scottish, TSW, Tyne Tees, Yorkshire and Grampian) also included a short announcement advertising Independent Local Radio stations in their respective areas as part of their closing sequences.
• The ITV regions gradually switched to 24-hour television between 1986 and 1988, under a directive issued by the IBA. Yorkshire Television was first to go round the clock showing programmes from the satellite station Music Box. However, Music Box shut down at the start of 1987 and YTV went back to a nightly closedown although it did air a teletext information service called Jobfinder for an hour after sign-off. During 1987, Thames/LWT, TVS and Anglia began through-the-night broadcasting (Thames had already extended broadcast hours to around 4 am previously). The other major regions including Granada, Central and Yorkshire slowly followed suit during the first half of the 1988 although many had been broadcasting until around 3 am for some time, especially at the weekend. By the start of September 1988 the last regions - Tyne Tees, Border, TSW and Grampian went 24 hours although Ulster which didn't start round-the-clock broadcasting until 3 October '88. Some overnight programming slots, typically between around 4 am and 5 am, were filled with Jobfinder, which some regions adopted and others didn't, and, since 1998, ITV Nightscreen. The temporary suspension of ITV's overnight gaming shows in March 2007 forced ITV to return to scheduling Nightscreen in the early hours of the morning until 6 am.
• Two popular scenes were inspired by the early years of television; firstly, the phrase "Don't forget to switch off your television set", a warning typically spoken by the station announcer which took place over a blank screen, often after several seconds of dead air, prior to the transmitter being switched off; and secondly the "little white dot", a phosphor trace which lingered on the screen as the power faded, diminishing in size until it became invisible.

Channel 4 & S4C

• Channel 4 closed down with the clock and a play-out of the exploding station ident before fading to black and after a minute or so the Channel 4 testcard appeared. Channel 4 was the only TV station to show the testcard at closedown as the BBC just radiated tone for ten minutes after closedown before the transmitters were switched off for the night. Channel 4 (which, at launch in 1982, were usually closed for around sixteen hours a day) began its 24-hour service on 6 January 1997, after a year of gradually expanding its overnight hours.
• S4C, the Welsh-language channel, continues to sign off each night, although it does air English-language infomercials for 2 hours after closedown from Friday to Sunday nights (or every night when the National Assembly of Wales is in recess). From Tuesday to Thursday nights, the channel airs delayed full broadcasts of the day's plenary meetings and committee hearings from the National Assembly of Wales at the end of the day's regular programming.