1 January – Papers released under the Thirty-year rule reveal that, contrary to what was believed at the time, Princess Margaret would not have lost her title nor Civil list payments had she married Group Captain Peter Townsend, a divorced War hero, in the 1950s.
3 January – The BBC cancels the appearance of Coca-Cola sponsorship credits in the music charts on its BBC OneTop of the Pops show, after criticism from politicians and health campaigners that it would be promoting junk food and unhealthy drink products to teenagers.
19 January – The English Court of Appeal calls for an end to the prosecution of parents whose babies may have died of Sudden Infant Death Syndrome (cot death) in cases where the only evidence is contended expert testimony.
27 January – The vote of Scottish Labour MPs, whose constituents are unaffected by the legislation, help Prime MinisterTony Blair narrowly defeat a rebellion in his own party over the Higher Education Bill – a highly controversial bill to reform higher education funding in England, including the introduction of increased and variable tuition fees – in the House of Commons by 316 votes to 311.
28 January – The Hutton Inquiry into the circumstances of the death of Dr. David Kelly is published. This is taken by most of the press to be a strong condemnation of the BBC's handling of the affair and to exonerate the government; the BBC's Director-General, Greg Dyke, chairman of the Board of Governors, Gavyn Davies, and the journalist at the centre of the controversy, Andrew Gilligan, resign. The UK media, in general, condemns the report as a whitewash.[3]
5–6 February – A party of Chinesecockle pickers is caught by the tides at night in Morecambe Bay, Lancashire, drowning 23 people. 21 bodies are recovered.[4]
15 February – The government are reported to have drawn up plans to break up the BBC in the wake of the Hutton inquiry.
19 February – Foreign SecretaryJack Straw announces that five of the nine Britons held without trial as terror suspects at the Guantanamo Bay prison camp in Cuba, along with a Danish national, are to be released.
21 February – Prime Minister Tony Blair comes under pressure from British human rights groups and MPs because of the government's sweeping powers under the Anti-Terrorism Crime and Security Act, which have allowed the detention of fourteen foreign terrorist suspects in the UK at what has been described as "Britain's Guantanamo Bay".
25 February – Katharine Gun, formerly an employee of British spy agency GCHQ, has a charge of breaching the Official Secrets Act dropped after prosecutors offer no evidence, apparently on the advice of the Attorney General for England and Wales. Gun has admitted leaking American plans to bug UN delegates to a newspaper.
March – Vauxhall launches the fifth generation of its popular Astra family hatchback. It is initially just available as a five-door hatchback, with a three-door "Sporthatch" and a five-door estate due later in the year.
11 March – Support for the Conservatives and Labour is equal at 35% for the second time in nine months, raising the spectre of a hung parliament at the next general election which is expected within a year.[5]
16 March – 15-year-old Scottish boy Kriss Donald is abducted, tortured and murdered by Pakistani gang in racially motivated attack in Glasgow.[6]
Operation Crevice, the arrest of a group of British Islamists, 5 of whom are subsequently convicted of conspiring to cause explosions likely to endanger life.[8]
10 May – Maxine Carr is released from prison with a new identity after serving half of her sentence for perverting the course of justice in the Soham murders case.[4]
14 May – Piers Morgan is dismissed as editor of the Daily Mirror after the newspaper published fake pictures of Iraqi prisoner abuse.[4]
15 May – Arsenal F.C. become the first team in history to win a Premier League undefeated. They are also the first to win a top flight title unbeaten since Preston North End in 1889.
A bumper election day takes place, dubbed "Super Thursday":
2004 United Kingdom local elections: Labour are dealt with significant blows, with a net loss of 464 councillors and 8 councils; while the Conservatives make a net gain of 13 councils and 288 councillors. There are mixed results for the Liberal Democrats as their vote share is down 3% and they lose 2 councils, but gain 123 councillors.
29 June – Islamic terrorist Kamel Bourgass, an illegal immigrant from Algeria, is convicted of the 2003 murder of Stephen Oake and the attempted murder of two other police officers. The crimes occurred in Manchester, with Oake stabbed eight times.[17]
2 July – Premier Inn's former name Travel Inn changes its name into Premier Travel Inn at 2 pm with the official bed from 1987 going on holiday and the official moon from July 2004 being born.
12 July – Chancellor of the ExchequerGordon Brown announces the massive loss of 100,000 civil service jobs in the UK; the savings to be put into frontline services such as Health and Education.
18 July – North Yorkshire police launch a murder hunt after 27-year-old twin sisters Claire and Diane Sanderson are found dead in a flat in Camblesforth, near Selby.
19 July – The government announces backing for the Crossrail project.
20 July – The government publishes the results of a review into Council Tax in England.
West Bromwich Albion F.C. terminate the contract of striker Lee Hughes as he is sentenced to six years in prison after being found guilty of causing death by dangerous driving, having killed a 56-year-old man in a collision near Coventry on 22 November 2003.
12 August – Police are investigating whether a couple, John and Joan Stirland, were victims of a revenge killing. Both were found shot dead at their home in Trusthorpe, Lincolnshire on 8 August, having fled their home in Nottingham after Mrs Stirland's son was convicted of a gangland murder.[20]
19 October – British aid worker Margaret Hassan is taken hostage in Iraq.[24]
24 October - Arsenal F.C's 49-league game unbeaten run, the longest in the history of English football, comes to an end following a 2-0 defeat away to Manchester United.[25]
The Earl of Shaftesbury, 66, is reported missing while on holiday in Nice, France. He is found murdered in 2005.
6 November – Ufton Nervet rail crash: Seven people are killed when a train is derailed by a car deliberately left on a level crossing in Berkshire.
15 November – Children Act clarifies most official responsibilities for children, notably bringing all local government functions for children's welfare and education under the authority of local Directors of Children's Services.
16 November
The government announces plans to prohibit smoking in most enclosed public places (including workplaces) within the next three years.
It is reported that Margaret Hassan is dead after her family receive a video recording supposedly showing her being killed.[28]
December – Ford launches the second generation of its best-selling Focus family car that was originally launched in September 1998.
2 December – David Bieber, a 38-year-old former United States marine, is found guilty of murdering PC Ian Broadhurst in Leeds on Boxing Day last year. He is sentenced to life imprisonment, and the trial judge recommends that he should never be released from prison. After his conviction, it is revealed that Bieber was wanted in connection with a 1995 murder in Florida. It is also revealed that he had entered the UK by using the alias Nathan Wayne Coleman – who was discovered to be a child that had died in infancy in 1968.
20 December – Northern Bank robbery: A gang of thieves steal £26.5 million worth of currency from Northern Bank's Donegall Square West headquarters in Belfast, one of the largest bank robberies in British history; no-one is ever found directly responsible for the crime.[31]
^ abcPenguin Pocket On This Day. Penguin Reference Library. 2006. ISBN0-14-102715-0.
^"A View from the CT Foxhole: Jonathan Evans, Former Director General, MI5". 24 March 2020. Archived from the original on 4 August 2022. Retrieved 1 August 2022. The plot... appeared to be encouraged and fomented by al-Qa`ida in the tribal areas. It was one of the early ones we saw. It involved predominantly British citizens or British residents of Pakistani heritage, something which became something of a theme for this period.
^"30 St Mary Axe". Emporis. Archived from the original on 4 June 2011. Retrieved 7 July 2010.{{cite web}}: CS1 maint: unfit URL (link)