The Office of Communications ( Welsh: Y Swyddfa Gyfathrebiadau ), commonly known as Ofcom , is the UK government-approved regulatory and competition authority for the broadcasting, telecommunications and postal industries of the United Kingdom.
Ofcom has wide-ranging powers across the television, radio, telecoms and postal sectors. It has a statutory duty to represent the interests of citizens and consumers by promoting competition and protecting the public from harmful or offensive material.  
Some of the main areas Ofcom presides over are licensing, research, codes and policies, complaints, competition and protecting the radio spectrum from abuse (e.g. pirate radio stations).
The creation of Ofcom was announced in the Queen's Speech to the UK Parliament, in June 2001. The new body, which would replace several existing authorities, was conceived as a "super-regulator" to oversee media channels that were rapidly converging through digital transmission. 
Ofcom launched on 29 December 2003, formally inheriting the duties that had previously been the responsibility of five different regulators: 
- the Broadcasting Standards Commission,
- the Independent Television Commission,
- the Office of Telecommunications (Oftel),
- the Radio Authority, and
- the Radiocommunications Agency.
With a Conservative government, Ofcom as we know it will cease to exist… Its remit will be restricted to its narrow technical and enforcement roles. It will no longer play a role in making policy. And the policy-making functions it has today will be transferred back fully to the Department for Culture, Media and Sport.
Under Cameron's subsequent premiership of the 2010 UK coalition government, the Public Bodies Act 2011 did remove or modify several of Ofcom's duties, although it did not substantially reduce Ofcom's remit. 
On 1 October 2011, Ofcom took over responsibility for regulating the postal services industry from the Postal Services Commission (Postcomm).
In April 2015, Ofcom announced that, as of 1 July, phone companies will have to provide customers with a set charge for the cost of calling numbers starting 084, 087 and 09. The streamlining of these charges must be printed in each customer's contract and monthly bills. The change will affect over 175 million phone numbers, making it the biggest overhaul of telephoning in over a decade. 
News International phone hacking scandal
In July 2011, in the wake of the News International phone hacking scandal, Ofcom came under pressure to launch an inquiry into whether the parent company of News International, News Corporation, was still the "fit and proper" owner of a controlling stake in the satellite broadcasting company British Sky Broadcasting (BSkyB). On 13 July former Prime Minister Gordon Brown urged Ofcom to launch an investigation.  On 15 July the Deputy Prime Minister Nick Clegg stated that the Government would launch a review of laws on what constituted a "fit and proper" owner for broadcasting companies in the United Kingdom, and that anyone found not to meet that standard can be forced to give up their current holdings in a company. 
On 22 July 2011, it was reported that Ofcom had begun an investigation into whether the phone-hacking scandal may have changed BSkyB's status as the "fit and proper" holder of a UK broadcasting licence. On the same day Ed Richards, the then chief executive of Ofcom, replied to Simon Hughes MP, Don Foster MP and Tim Farron MP following a letter which they had written to him on 8 July concerning News Corporation's shareholding in BSkyB.  In the letter Richards confirmed that Ofcom considers that News Corporation's current shareholding of 39.14% in BSkyB does give it a material influence over the company; that Ofcom is not precluded from acting by ongoing police investigations; and that Ofcom's process is not dependent upon a criminal conviction being secured. 
In April 2012, Ofcom's probe moved from a monitoring phase to an "evidence gathering" phase. 
Television and radio
Ofcom licenses all UK commercial television and radio services in the UK. Broadcasters must comply by the terms of their licence, or risk having it revoked. Ofcom also publishes the Broadcasting Code, a series of rules which all broadcast content on television and radio must follow.  The Broadcasting Code requires that content inappropriate for children should not be broadcast between the hours of 5:30 a.m. and 9:00 p.m. Premium-rate film services may broadcast content equivalent to a BBFC 15 certificate at any time of day provided a PIN -protected system is in place to restrict access to those authorised to view it.  The broadcasting of pornography with a BBFC R18 certificate is not permitted.  In 2010 Ofcom revoked the licences of four free-to-air television channels for promoting adult chat services during daytime hours and transmitting content that was too sexually explicit. The companies involved were fined £157,250.  Ofcom's jurisdiction does not cover television and radio channels which are broadcast in the UK but licensed abroad. In 2012 Ofcom lodged a complaint with the Dutch media regulator regarding the content of adult chat television channels which are broadcast in the UK but licensed in the Netherlands.  Based on a survey of 200 British respondents, Ofcom published in 2016 a list of about 50 words ckassified in four grades of offensiveness, from "milder" to "strongest." 
Telephone and broadband
Ofcom regulates the UK telecoms sector, defining and enforcing the conditions by which all mobile and fixed-line phone and broadband companies must abide. These 'general conditions' are wide-ranging rules relating to matters such as telephone numbering, emergency services, sales, marketing and interconnection standards. Ofcom's investigation unit monitors compliance with the conditions and resolves disputes between providers.
Ofcom is also the competition authority for telecoms, enforcing remedies in markets where it believes dominant operators may have a potentially harmful influence on competition or consumers. One of its most high-profile interventions was to require BT to split its wholesale and retail arms into separate companies, bringing about the creation of Openreach which supplies wholesale services to both BT Retail and competing providers. 
On 1 July 2015, Ofcom made a number of changes to the way phone calls to UK service numbers would be charged. Under the new legislation, which was promoted by an information campaign entitled UK Calling,  call charges must be clearly stated on all materials that advertise a service number. The changes came after research found that callers are often confused about service call charges, and thus can avoid calling these numbers. The July 2015 changes also saw 'freephone numbers' 0800 and 0808 become free to call from both mobiles and landlines. 
In March 2016, Ofcom launched an interactive 'Mobile coverage and fixed broadband checker',  allowing people to check mobile coverage and broadband speeds via their post code.
Spectrum licensing and protection
Ofcom is responsible for the management, regulation, assignment and licensing of the electromagnetic spectrum in the UK, and licenses portions of it for use in TV and radio broadcasts, mobile phone transmissions, private communications networks, wireless devices and so on. The process of licensing varies depending on the type of use required. Some licences simply have to be applied and paid for, other commercial licences are subject to a bidding process. Most of the procedures in place have been inherited from the systems used by the previous regulators. However, Ofcom may change some of these processes in future.
Ofcom protects the radio spectrum in a number of ways:
- Working within international organisations ( ITU, CEPT and BEREC).
- Licensing UK-controlled commercial radio spectrum; the Ministry of Defence controls its own spectrum. Within the international frame work for frequency use; Ofcom liaises through the UK Government to produce the UKFAT (UK Frequency Allocation Table). The current table was produced in 2013.
- Investigate and, when necessary, carry out enforcement activities to clear interference or illegal use from the spectrum. Until June 2010 Ofcom investigated all interference cases within the UK. Interference reporting has now been transferred to the BBC. This contract specifically excludes any requirement to investigate interference relating to AM radio reception.  Commercial and spectrum licence holders report to Ofcom and in all cases Illegal/Pirate Radio operations are still reported to Ofcom.
In October 2010 the government announced plans for Ofcom to inherit the functions of Postcomm as part of a wider set of public service sell-off measures.  Following the Postal Services Act 2011 regulatory responsibility for postal services transferred to Ofcom on 1 October 2011, with its primary duty to maintain the UK's six-day-a-week universal postal service.
Ofcom makes extensive use of consultations with industry and the public to help it make decisions based upon the evidence presented. Consultation processes begin with publishing documents on its website,  asking for views and responses. If the document is perceived to be long and complicated, a plain English summary is usually published as well. A period, usually of 10 weeks, is allowed for interested persons, companies or organisations to send in their responses to the consultation.
After this consultation period, Ofcom publishes all the responses on its website, excluding any personal or confidential information. Ofcom then prepares a summary of the responses received, and uses this information as a basis for its decisions. 
Dame Patricia Hodgson DBE was appointed as chairman of Ofcom for a three-year term from April 2014. She was a member of the Ofcom board from July 2011 and became deputy chairman in January 2012.  On 18 July 2016 it was announced that her term would be extended for a further year until 2018. 
On 15 March 2016 it was announced that Steve Gettings would become Acting Corporation Secretary in succession to Graham Howell. 
Colette Bowe was appointed Ofcom chairman with effect from 11 March 2009.    She is the founding chairman of the Telecoms Ombudsman Council, and chaired Ofcom's Consumer Panel from its inception in 2003 to December 2007.
The first chairman of Ofcom was David Currie, Dean of Cass Business School at City University and a life peer under the title Lord Currie of Marylebone. The first chief executive was Stephen Carter, Baron Carter of Barnes, formerly a senior executive of JWT UK and NTL and subsequently a Minister for Communications, Technology and Broadcasting. 
Ofcom's key personnel are: 
- Chief executive, Sharon White
- Board members:
Ofcom publishes a register of disclosable interests of the Ofcom board. 
Ofcom has a number of committees and advisory bodies which inform the Ofcom Board and Executive. These include: 
- Communications Consumer Panel (CCP)
- Advisory Committee for Older and Disabled People (ACOD)
- Risk and Audit Committee
- Nominations Committee
- Remuneration Committee
- Election Committee
- Non-Executive Remuneration Committee
- Nations Committee
- Advisory Committee for England
- Advisory Committee for Northern Ireland
- Advisory Committee for Scotland
- Advisory Committee for Wales
- Community Radio Fund Panel
- Ofcom Spectrum Advisory Board (OSAB)
- Broadcast Licensing Committee
Ofcom has received criticism for incurring unnecessary costs as a result of "extravagant Thames-side offices" and a "top-heavy salary bill",  for inflexibility in its regulation of commercial radio,  and for "poor service". 
The Qatar-based newsmedia outlet was reported  to Ofcom in January 2017, following an exposé about Israeli diplomatic  corp irregularities and influence peddling amongst political and student groups in the UK. After investigations exceeding eight months, Ofcom reported that Al Jazeera was in line with journalism standards and cleared the filmmakers of the allegations. 
In May 2011, Ofcom ruled that Press TV, an Iranian English-language satellite channel, was responsible for a serious breach of UK broadcasting rules and could face a fine for airing an interview with Maziar Bahari, the Newsweek journalist arrested covering the Iranian presidential election in 2009, that was obtained by force while he was held in a Tehran jail. 
Upon the release of Ofcom's findings, Press TV claimed that Maziar Bahari was "an MI6 contact person"  taking guidance from " The Protocols of the Learned Elders of Zion, protocol No. 7".  Press TV called Ofcom's ruling "part of an anti-Iranian campaign," and that "A quick look at senior decision makers at OFCOM demonstrates that the regulator is mostly made up of former Channel 4 and BBC executives, some of whom are well-linked to and influenced by powerful pro-Israeli politicians."  
Sitefinder database and freedom of information
The Sitefinder database is a national database of mobile phone base stations in the UK.  In September 2007 an Information Tribunal ruled that the public should have access to the database under the Freedom of Information Act 2000.  However, as Ofcom has no legal power to force mobile phone operators to add information to the database, UK mobile phone operators consequently ceased updating it.  Ofcom appealed against the Freedom of Information Act ruling, together with one UK mobile operator – T-Mobile. This has led to accusations of the organisation's complicity with the mobile telecommunications industry in keeping information about mast locations secret.  Ofcom's stated reasons for the appeal have ranged from "preventing terrorist attacks" on the sites of phone masts to "protecting the intellectual property" of the mobile telecommunications industry.
In April 2008, the High Court found in favour of the Information Commissioner's Office and over-ruled Ofcom's objections. Ofcom appealed to the Supreme Court, who in turn referred a point of law to the European Court of Justice, and then in October 2011 ordered that the matter should be remitted to the Information Rights Tribunal to reconsider the public interest balancing exercise.  On 12 December 2012, the Information Rights Tribunal upheld its decision of 4 September 2007. 
- Advertising Standards Authority
- Annan Committee, that in 1977 recommended the establishment of a Broadcasting Complaints Commission
- Broadband stakeholder group
- Office of Fair Trading
- Press Complaints Commission
- International Telecommunication Union
- List of telecommunications regulatory bodies