Early experiments

On 9 August 1986, Yorkshire Television became the first ITV company and the first British terrestrial television station to offer 24-hour broadcasting.^[3] This was achieved by simulcasting the satellite station Music Box for a three-month trial, as permitted by the IBA.^[4] The all-night simulcasts continued until Friday 2 January 1987 – shortly before Music Box ceased operations as a broadcaster. On 13 January 1987, Yorkshire became the second region to launch a teletext-based Jobfinder service for one hour after close-down (Central had launched a Jobfinder service the previous April) with a Through Till Three strand on Thursday, Friday and Saturday nights introduced in April.

On 25 April 1987, Central began extending its programming hours to 3 am on weeknights and 4 am at weekends, airing its own schedule of films, series and hourly Central News bulletins entitled More Central. The station's Jobfinder service (launched a year beforehand) was expanded from a single hour after close-down to fill the remainder of the night until TV-am took over at 6 am. Meanwhile, Granada Television took a more restrictive approach – during 1987, the station introduced a Nightlife strand, which saw programming hours extended until around 3 am on Friday and Saturday nights only. A short-lived joint schedule was introduced by Central, Granada and Scottish Television when the companies began full 24-hour transmission on 13 February 1988, but was abandoned within a few months. During this time, all three stations provided local presentation. Central continued to air its own overnight service until 1994, when it briefly took Carlton's Nightime [sic] service (with opt-outs for regional programming until circa 2003).

In August 1987, Anglia Television, Thames Television and LWT began 24-hour broadcasting. Thames's Into the Night strand began in June 1987 with broadcasts originally running until around 4 am, extending to a full service on Monday 17 August 1987. Anglia originally opted to air Night Network on weekends alongside its own overnight schedule on weeknights while LWT filled the post-Night Network slot with a short-lived Thru to 6 strand. Tyne Tees Television also experimented with 24-hour transmission when in December 1987, it began airing its own teletext Jobfinder service between close-down and 6 am. This continued until Granada's Night Time service launched on Tyne Tees the following September.

TVS, which also aired Night Network at weekends, started its own Late Night Late strand on Monday 25 January 1988, gradually extending its broadcast hours until a full 24-hour service began on 30 May 1988 – the strand was the first to be simulcast on another ITV station, (Channel Television).

HTV Wales and HTV West began broadcasting its own Night Club service on 22 August 1988. Both Late Night Late and Night Club took on a different approach to the practice of in-vision continuity – incorporating viewers' letters, competitions and live studio guests – such features were also used by Thames and Anglia's regional overnight strands.

One constant of all the overnight services, regardless of their differing schedules, was overnight news bulletins provided by ITN, referred to as simply the ITN News Headlines. These were no-frills bulletins, originally proceeded by a variant of the ITN animation of the time set over a dusk sky background (as opposed to the usual light blue); these bulletins would lead into the ITN Morning News, and typically the anchor of that day's edition of the ITN Morning News would also anchor the short updates. The headlines were aired at different times depending on the schedule; both the bulletins and the Morning News debuted on 15 February 1988. Thames also briefly aired editions of CNN Headline News before the ITN World News in 1988.

Night Network

Night Network was ITV's first major experiment into the area of overnight broadcasting beginning on Friday 28 August 1987, originally for the ITV regions covered by LWT, TVS and Anglia, before expanding to other regions from September 1988. Whereas overnight broadcasts are commonplace today, back in the late 1980s, LWT decided it would take a more cautious approach with Night Network only initially broadcasting between 1 am and 4 am in the Friday and Saturday night schedules, and between 1 am and 3 am in the Sunday night schedule.

The show was produced for Night Network Productions^[5] and LWT by Jill Sinclair who had been the producer of BBC1's Pop Quiz and Channel 4's The Tube at Tyne Tees Television, aiming for a similar audience to that of these two shows. The format of Night Network was similar to Channel 4's Network 7, or even a late night adult version of Saturday morning kids TV, as it was a mixture of quizzes, celebrity guests, imported serials and bands.

Feature segments included Street Cred with Paul Thompson, Video View with Steve Allen and Kate Davies, Rowland Rivron in The Bunker Show, Tim Westwood's N-Sign Radio, Emma Freud's chat segment Pillow Talk, Geoffrey Cantor's video segment The Axeman, Barbie Wilde's video review for The Small Screen, and quiz show The All New Alpha Bet Show hosted by Nicholas Parsons, whilst cult TV series Captain Scarlet and the Mysterons and Batman were also frequently seen. Originally, on Sunday nights, classic movies were shown but this was only until the programme was expanded to other ITV regions on Friday 2 September 1988.

Although it proved a success, Night Network was never broadcast nationally as Central opted out of the entire programme from the start to provide its own schedule. With more programmes (be it imports, repeats or original output) competing for the overnight slots, the Sunday edition was eventually dropped in Autumn 1988. Around the same time, the first hour of Night Network became a regional For London Only segment on LWT while the remaining two hours continued to air across other regions, albeit in differing timeslots depending on the stations' preferred schedules.

Night Network was broadcast for the last time on Friday 31 March 1989.^[6]

Night Time from Granada

On 2 September 1988, four of the smaller ITV companies (Border, Grampian, Tyne Tees and TSW – joined from 3 October 1988 by Ulster – began 24-hour broadcasting with the introduction of Night Time, a part-networked service provided by Granada Television's presentation department in Manchester and intended to help the smaller ITV stations who were unable to provide a service of their own.

This new late night line up consisted mainly of films, and syndicated American shows such as America's Top Ten (presented by Casey Kasem), American Gladiators (the popularity of which prompted LWT to commission their own equivalent series in 1992), WCW Worldwide (which would later be promoted to British wrestling's old Saturday afternoon slot) and Donahue. There was also a limited number of home-produced programming such as Granada's Nightbeat, The Other Side of Midnight (hosted by Factory Records' Tony Wilson),^[7][8][9] The Hitman and Her (and replacement BPM), Quiz Night, Movies, Games and Videos, Get Stuffed,^[10][11][12] Stand Up^[13] and LWT's Cue the Music.^[14]

Traditionally, Grampian would opt out of the overnight networked service by providing its own regional schedule on Hogmanay night into New Year's Day morning - with the exception of 1988^[15] and 1997,^[16] as Grampian carried the network schedule through the night as normal after their hogmanay output had finished broadcasting to their region respectively, Border Scotland would also carry STV's hogmanay show on a yearly basis too, but didn't provide a regional schedule of their own afterwards, so they too carried the overnight network schedule as normal.

Granada's Night Time service was wound down during 1995 – with programming carried from LNN from January onwards before presentation was handed over to the London service on 5 June.

Night Shift from Yorkshire

On 29 May 1988, Yorkshire Television reintroduced a full through-the-night service, this time consisting of films, imports, series and networked original programming including YTV's The James Whale Radio Show, simulcast locally with Radio Aire. Following Yorkshire's buyout of Tyne Tees Television in 1992, a new overnight service for both stations was launched entitled Night Shift, broadcast across both regions from YTV's transmission centre in Leeds with pre-recorded continuity from the station's announcing staff. Separate overnight presentation for the YTV and Tyne Tees areas was introduced two years later.

Both regions aired the same schedule of imports, films, local programming and Bollywood movies although for a short while, YTV refused to air more adult programming such as The Good Sex Guide and God's Gift – while such output continued to air on Tyne Tees. The service remained locally originated (despite the introduction of networked idents in 1997) until 25 January 1998. YTV continued to opt out of the network for its regular Jobfinder programme at 5 am until around 2005.

ITV Night Time from Thames/LWT

During 1991, Anglia, HTV and TVS discontinued their own overnight strands and began carrying a new ITV Night Time service from London, provided by Thames from Monday to Thursday and LWT from Friday to Sunday. For the first time, both London companies utilised the same on-screen branding throughout the week – the only notable difference being LWT's near non-use of a continuity announcer at the weekend.

Around this time, original programming for the network included LWT's Cue the Music, Dial Midnight, ...in Profile, The Big E,^[17] Noisy Mothers,^[18] One to One,^[19] In Bed With Medinner, Night Shift, Get Stuffed and Thames's Video Fashion,^[20] albeit airing in differing timeslots depending on each strand's schedule. Imported output increased with featured shows including Night Heat, Soap, Three's Company, The Time Tunnel, Too Close for Comfort, The Equalizer and American sporting programmes.

Following the loss of Thames' franchise on 31 December 1992, Anglia and HTV began taking Granada's Night Time, leaving LWT with its own overnight presentation – the network-branded 3 Nights, which featured some of LWT's local programming.

Nightime

On 1 January 1993, the new ITV franchise holder for London weekdays, Carlton introduced a new Nightime [sic] service, airing from Monday – Thursday nights and simulcast by Meridian and Channel Television. It was also briefly simulcast by Central between 1994 and 1995.

On Friday, Saturday and Sunday nights, Meridian & Channel broadcast its own version of Nightime, presented in-vision from Southampton by ex-Late Night Late presenter Graham Rogers. Both Carlton and Meridian/Channel services utilised the same on-screen branding and presentation throughout the week. Around this time, programming largely consisted of output airing on the other services as well as imports including French soap Riviera and in the case of Meridian, regional programming, including World Of Sailing and Freescreen, an experimental series featuring viewers' videos and social action features.

ITV Night Time from LNN

From 13 February 1995, London News Network (a subsidiary of Carlton & LWT) launched a revamped overnight service featuring new neon-themed presentation (without any station-specific branding) and a year later, a brand slogan – Television with Attitude. Initially broadcast in London only, the service expanded on 5 June to most of the regions formerly served by Granada's version of Night Time (which had been following the same schedule as LNN's service since the start of the year).

New original programming was also produced for the network including Bonkers!, Bushell on the Box, Carnal Knowledge, Club @vision,^[21] Cyber Cafe, Cybernet, Curtis Calls,^[22] Hotel Babylon,^[23] God's Gift, Late and Loud, The Paul Ross Show, Pyjama Party, The Lads and Rockmania. Although less reliant on imports than before, shows including Coach and Box Office America continued to feature within the schedules.

NightTime/The Edge from Meridian

Following the launch of the LNN service over much of the ITV network, Meridian's overnight service expanded to seven days a week in February 1995 and began airing in the Anglia region. Overnight continuity links were discontinued in favour of announcer-less idents and presentation.

Meridian's programming was also adopted in January 1996 by HTV and Westcountry, who opted to run separate local presentation from HTV's presentation centre in Cardiff. The arrangement continued when Meridian revamped and relaunched the service as The Edge in September 1996. The service largely carried the same programmes provided by LNN with some regional opt-outs for programmes such as Meridian’s World of Sailing and Freescreen.^[24]

In 1998, The Edge was dropped and replaced by a set of idents using generic ITV branding. These idents were amended later that year to reflect the change of ITV's generic logo and continued to be used until May 2000, by which time, Meridian had adopted the generic overnight branding used by the rest of the network since November 1999.

1999 – 2000s

With 24-hour programming becoming the norm on British television, ITV phased out the Night Time logos and presentation on overnight shows by late 1999 with generic network branding taking its place in most regions and ITV Nightscreen starting to take up timeslots towards the end of the night. From 2001 onwards, many of the former overnight programmes associated with the old Night Network and Night Time services were replaced with repeats of networked daytime shows (many of these including on-screen BSL signing for the deaf). By 2005, the only original Night Time programme still airing was the offbeat cookery show Get Stuffed. Scottish and Grampian (both branded overnight as "Nighttime TV") continued to run its own overnight schedule until around late 2004.

Quiz programming in the form of Quizmania and later, ITV Play output such as The Mint and Make Your Play aired overnight between December 2005 and December 2007.

Present

All ITV plc regions now carry the same schedule from London. Up until mid-2019, ITV's overnight schedule consisted mainly of repeats of talk and lifestyle shows such as Loose Women and ITV Nightscreen, as well as the roulette strand Jackpot247. STV in Northern & Central Scotland, UTV in Northern Ireland and ITV Channel Television opt out of the overnight schedule regularly for teleshopping, alternative programming and ITV Nightscreen.

STV also continues to provide its own localised presentation overnight – in April 2010, the station introduced The Nightshift, a nightly strand consisting of interactive viewers' chat, local & national news and extracts from current and archived STV programming, linked by live out-of-vision announcers in Glasgow. Initially launched as a pilot in the Central Scotland region, the programme began airing a separate edition for Northern Scotland and later, separate editions for each of STV's four sub-regions. A single pan-regional programme was later broadcast across the STV North and STV Central regions at weekends.

The Nightshift was axed in October 2015 and replaced by After Midnight, a rolling service of regional news and local programming highlights from the STV City channels.

From 1 August 2019, home shopping channel Ideal World began simulcasting during part of the overnight period on ITV, including in the UTV and Channel regions which for legal reasons hadn't been able to carry the prior casino gaming strand in the slot (replacing it with repeated programmes and Nightscreen). STV began simulcasting Ideal World content from September 2021, having previously carried its own separate teleshopping content, After Midnight (until its cancellation following the demise of STV2) and ITV Nightscreen - the latter in some cases for longer than in ITV-branded regions. (Due to schedule opt-outs, on some nights STV will join Ideal at a different point to ITV.) On 1 October 2021 ITV Nightscreen was scrapped and replaced by footage-and-music strand Unwind With ITV (branded as 'Unwind With STV' in STV regions), produced by Rock Oyster Media.

In October 2022, STV launched their own overnight filler programme, called Nightvision in a similar format to the former After Midnight programme, but only contains regional news on a loop throughout the allocated timeslot between roughly 3am and 5am.^[25]

In June 2023, the Ideal World strand on ITV1 was discontinued prior to the company's collapse into administration. Following this, the slot was filled with repeats of some of ITV's general entertainment or factual programming, most of which carried on-screen British Sign Language for deaf viewers. On December 1 2023, ShopOnTV was launched featuring presenters from the former Ideal World channel, which runs for approximately three hours each night until 3am on ITV1.