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Communications Act 2003

Last revised by LocalRoot - 22 Jun 2026, 07:18

The Communications Act 2003 is a major United Kingdom statute governing communications regulation. It created the modern statutory framework for Ofcom, electronic communications networks and services, use of the radio spectrum, broadcasting, television and radio services, media ownership controls, and related criminal offences.

The Act is often cited in online-speech cases because of section 127, but that is only one part of a much wider regulatory statute.

Background

The Act brought together several areas of communications law that had previously been dealt with through separate regulators and older telecommunications and broadcasting legislation. It gave the Office of Communications, usually known as Ofcom, broad functions across telecoms, broadcasting, spectrum, and related markets.

Ofcom describes itself as the regulator for communications services used in the UK, including broadband, home phone, mobile services, TV, radio, on-demand services, spectrum, and online safety duties added by later legislation.

Ofcom

Section 3 sets out Ofcom's general duties. Its principal duty is to further the interests of citizens in relation to communications matters and consumers in relevant markets, where appropriate by promoting competition.

In practice, Ofcom's work includes:

  • Regulating phone, broadband, and mobile markets.
  • Managing radio spectrum.
  • Licensing radio and television services.
  • Enforcing broadcast and on-demand rules.
  • Handling communications-sector competition and consumer duties.
  • Enforcing online safety duties created by the Online Safety Act 2023.

Electronic Communications

The Act replaced much of the older licensing structure for telecommunications with a system of general authorisation and regulatory conditions. Providers can offer electronic communications networks and services, subject to conditions and enforcement powers.

The Act has been amended many times. Later changes include telecoms security duties, online safety duties, and additional powers connected to communications infrastructure.

Broadcasting and Spectrum

The Act also deals with broadcasting regulation and spectrum management. It supports Ofcom's role in radio and television licensing, spectrum authorisation, broadcast standards, and public-service broadcasting obligations.

Radio spectrum is treated as a managed public resource. Ofcom authorises and regulates spectrum use because wireless services can interfere with each other if frequencies are not controlled.

Section 127

Section 127 is the best-known criminal provision in the Act. It concerns improper use of a public electronic communications network.

Following changes made by the Online Safety Act 2023, the Crown Prosecution Service guidance states that the Communications Act 2003 still covers grossly offensive, indecent, obscene, or menacing messages, and persistent misuse of a public communications network. The Online Safety Act 2023 repealed the Communications Act false-message provisions and introduced new communications offences, including false communications and threatening communications offences.

Section 127 cases can involve social media posts, messages, calls, and other communications sent by means of a public electronic communications network. Prosecutors must consider the evidence, charge selection, freedom of expression, context, harm, and whether prosecution is necessary and proportionate.

Relationship With the Online Safety Act 2023

The Online Safety Act 2023 did two different things. It created a regulatory regime for online services, and it also created new criminal communications offences in Part 10.

The new offences include false communications, threatening communications, flashing images sent electronically, and encouraging or assisting serious self-harm. These offences sit alongside section 127 rather than simply replacing the whole Communications Act.

Common Misunderstandings

The Act is sometimes described as if it creates every internet-related offence. That is not correct. Unauthorised access to computer material is mainly dealt with under the Computer Misuse Act 1990, not the Communications Act 2003.

It is also wrong to treat section 127 as if it criminalises every rude, offensive, or unpleasant message. The statutory wording, prosecutorial guidance, human-rights considerations, and the facts of the case all matter.

Practical Examples

Menacing Message

A person sends a message that reasonably conveys a serious threat through a public communications network. Depending on the exact wording and facts, prosecutors may consider section 127, an Online Safety Act offence, harassment legislation, malicious communications legislation, or a more serious offence.

Persistent Misuse

A person repeatedly makes nuisance calls through a public network to cause anxiety or disruption. Persistent misuse under section 127 may be relevant, but prosecutors still have to select the charge that best reflects the conduct.

Hacking

A person gains unauthorised access to an account or computer system. That is usually considered under the Computer Misuse Act 1990, not section 127 of the Communications Act 2003.

See Also

References

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