Tough junk food ad rules coming to UK in 2026

October 02, 2025

Britain is preparing to roll out some of the world’s toughest junk food advertising restrictions, clamping down on when and how companies can promote products high in fat, sugar, and salt (HFSS).

Key policy changes

• Effective January 2026: HFSS ads will be banned online and restricted on TV before 9 pm.

• The goal is to tackle rising childhood obesity rates, with nearly one in three children in the UK overweight or obese by age 11.

• The rules, originally due in October 2025, were pushed back after lobbying from the food and advertising industries.

Why it matters

Childhood obesity in the UK remains a pressing public health crisis. Studies consistently show that exposure to junk food marketing heavily influences children’s eating habits, making ad restrictions a critical intervention.

The UK has already trialed other health measures — including a sugar tax and front-of-pack nutrition labels — with mixed results. Health experts say advertising bans are a powerful tool but warn they must be combined with wider reforms like food reformulation, fair pricing strategies, and better access to healthier meals.

Impact on public health and sustainability

A poor diet is one of the leading causes of preventable disease, driving up healthcare costs and undermining long-term wellbeing. Limiting junk food promotions supports:

• Healthier diets for children and families

• Reduced strain on the NHS

• Sustainable food systems, aligned with climate and social resilience goals

However, experts caution that without a comprehensive systems approach, the ban alone may not trigger deep dietary change.

What happens next

• The government will consult on brand-only advertising, which could become a loophole if companies promote brand identity without showing HFSS products.

• Enforcement will be overseen by Ofcom and the Advertising Standards Authority (ASA).

• Both the food industry and media companies are expected to test the limits of the new law, while public health groups push for even tougher regulations.

Expert insight

 “Banning junk food ads is a step in the right direction, but a step alone doesn’t solve obesity.” — UK public health campaigner, quoted in The Economist

The numbers

• According to government estimates, the advertising ban could:

• Remove 7.2 billion calories from children’s diets annually

• Prevent 20,000 cases of childhood obesity each year