On July 14, 2026, Tech Policy Press published an analysis by Bangor University professor Andrew McStay arguing that a single undefined phrase — "intimate functionality" — is set to shape the next year of AI regulation, starting in Britain. The phrase comes from the UK government's June 15, 2026 announcement that it would bar under-16s from social media and, tucked inside the same package, restrict "romantic companion" chatbots for under-18s. Crucially, the government added that "similar intimate functionalities will be restricted for under-18s on AI chatbots more widely" — a clause that reaches beyond dedicated companion apps like Character.AI, Replika ("the AI friend to fall in love with"), and Nomi to sweep in general-purpose systems from OpenAI, Google, Meta, and xAI.

Why It Matters

Definitions are destiny in regulation, and "intimate functionality" is about to become one of the most consequential undefined terms in AI policy. For companion-app developers and the broader sexual-wellness AI space, the UK debate previews a core compliance fault line: will rules target explicitly sexual features (easy to wall off, easy to evade) or the emotional-dependency design patterns that actually drive harm and engagement? A content-based definition lets general-purpose chatbots — where most teens actually form attachments — slip the net, while a design-based one could pull mainstream assistants into adult-content-style age gating. Whichever way Britain lands, it will shape product design, age-assurance investment, and market access for every company selling artificial intimacy.

The problem, McStay argues, is that "intimate functionality" is a category no one has yet defined, and disentangling it will be the substance of the coming regulatory phase. The evidence undercuts the government's framing that the danger is romance: surveys cited in the piece indicate most teenagers have used an AI companion, and the tool they overwhelmingly reach for is ChatGPT — treated as a confidant, not a lover. That mismatch matters because the intervention was motivated by US cases and lawsuits (including suits filed by families and the Social Media Victims Law Center alleging ChatGPT's design contributed to teen suicides) and by the absence of AI-companion provisions in the UK's existing Online Safety Act.

The Bureau of Investigative Journalism (TBIJ), in a June 19, 2026 investigation, made the complementary critique that the UK's "world-first" romantic-chatbot ban leaves large loopholes because it targets content rather than design. If the rule applies only to features "specifically designed to enable sexually explicit interaction," then general-purpose assistants like ChatGPT, Claude, and Gemini — where much of the actual emotional reliance happens — may sit outside the age gate even as narrowly branded companion apps get captured. The result risks being a ban that catches the labels but not the behavior.

The stakes for sextech are direct: AI companionship sits at the blurry border of emotional-wellness product, entertainment, and adult content, and how Britain defines "intimate functionality" will set a reference point other jurisdictions borrow. It arrives the same week China's far blunter companion crackdown took effect, underscoring that two very different regulatory philosophies — the UK's content-and-age-gate approach versus Beijing's feature-level ban — are being drafted in real time.

Sources

Update — 2026-07-15

Initial entry — story first created.