An informal, largely historical expression used in legal practice to describe the internet and other interconnected electronic communications networks and services that carry digital information worldwide, linking users, businesses and public bodies.
The term is not defined in UK or Irish legislation or case law and is used descriptively across contexts (telecoms, technology, media). In contracts or policies, it is commonly understood to cover internet access, broadband and mobile data networks, online platforms, cloud and messaging services.
Legal significance: activities over these networks are regulated under telecoms and online regulation (UK: Communications Act 2003, Ofcom rules; Ireland/EU: European Electronic Communications Code, ComReg), data protection (UK GDPR/Data Protection Act 2018; EU GDPR in Ireland), e-commerce and consumer law (Electronic Commerce Regulations 2002 in the UK and Irish equivalents), cybersecurity and online safety regimes.
Usage is broadly consistent across England & Wales, Scotland, Northern Ireland and Ireland. Because the phrase is imprecise, modern drafting should prefer defined terms such as internet, electronic communications network/service, information society service or online service, and specify scope (fixed or mobile networks, OTT services, content platforms, cross-border data flows).