Ofcom’s admission of jurisdiction limits comes after a US court warned of constitutional conflicts.
*Ofcom’s chief executive conceded its jurisdiction ends where foreign courts begin. The U.S. court’s obiter dicta signal a chilling road for the UK regulator’s Online Safety Act abroad.*
Ofcom’s chief executive, Dame Melanie Dawes, publicly admitted that the UK regulator’s reach ends where a foreign court’s authority begins. The confession came during a Commons Digital, Culture, Media and Sport Committee hearing, where she warned that foreign courts could block the recovery of fines. The admission follows a U.S. District Court’s obiter dicta in 4chan v. Ofcom, which warned Ofcom of a “very chilly reception” if it tries to enforce the Online Safety Act in America. The court’s reasoning hinged on constitutional protections that routinely reject foreign penal judgments. The combined statements signal a practical end to Ofcom’s cross‑border enforcement ambitions.
During testimony, Dame Melanie Dawes, Ofcom’s chief executive, stated the regulator knows its jurisdiction stops at the edge of a foreign court’s reach. She warned, “If foreign courts decide to… try and get in our way, there will be a point at which we have to accept that we won’t be able to recover that money.” The admission marks the first public acknowledgment that Ofcom cannot enforce the Online Safety Act against entities outside the UK.
In the 4chan v. Ofcom case, the District Court for the District of Columbia issued obiter dicta that Ofcom would face a “very chilly reception” in American courts. The court noted that foreign judgments violating the U.S. Constitution are routinely refused, citing Matusevitch v. Telnikoff as precedent. It also observed that penal foreign judgments are not necessarily enforceable in the United States, underscoring the legal barrier to Ofcom’s cross‑border fines.
Ofcom has already issued censorship orders to roughly 200 American platforms. Only four have refused, and 4chan is the sole remaining holdout. The regulator’s next move, according to internal sources, is to seek “interim business disruption measures” that would block foreign sites in the UK before any enforcement action. Those powers were rejected by Parliament in a previous round and have been repudiated by former MP Nadine Dorries.
The defeat does not halt Ofcom’s domestic agenda, but it sharpens the urgency for U.S. lawmakers. Preston Byrne argues that only permanent U.S. legislation, such as the proposed GRANITE Act, can shield American platforms from foreign censorship regimes. The case also fuels the UK free‑speech movement, which must now confront a regulator that has repeatedly stumbled over trans‑national enforcement.
Dame Melanie Dawes said Ofcom knows its jurisdiction ends where a foreign court’s jurisdiction begins and that it may have to accept it cannot recover money if foreign courts intervene.
The court warned Ofcom would face a very chilly reception in US courts and noted that foreign penal judgments that violate the US Constitution are generally not enforced.
Ofcom has targeted roughly 200 American platforms; only four have refused, and 4chan is the sole remaining holdout.
Ofcom’s defeat in the 4chan case underscores the limits of extraterritorial regulation in a world of competing legal orders. While the regulator may still pursue domestic censorship tools, its inability to enforce abroad forces a reckoning in both Westminster and Washington. U.S. legislators now face pressure to codify protections against foreign censorship, and UK free‑speech advocates must rally against any new powers that could deepen authoritarian backsliding. The battle over digital borders has only just begun.
Sources: Hacker News article “Ofcom Concedes Defeat in the 4chan Case” (Preston Byrne, October 20, 2026)