There's a lot of misinformation going around about how the legislation works.
All porridge oats are "in scope" of the regulation, which means they need to be scored using the "Nutrient Profile Model" score before being advertised.
The result is that porridge oats are not banned, but golden syrup instant porridge oats will be.
Here's the scoring model: https://www.gov.uk/government/publications/the-nutrient-prof...