Spoiler: no it won't.

As usual, certain newspapers have been cynically pushing a grab-bag of half-truths, because they know their idiot readers are easy to manipulate.

https://www.theguardian.com/world/2026/apr/04/breakfast-reset-will-marmalade-really-be-renamed-in-post-brexit-food-deal

Keir Starmalade, anyone? Will marmalade really have to be rebranded in UK?

Britain is reportedly considering aligning with EU rules in what Daily Mail is calling the PM’s ‘breakfast reset’

The Guardian
@stephenfarrow And also, as someone who eats industrial quantities of marmalade (because it’s lush), I feel suitably qualified to say that it doesn’t matter anyway if it says “citrus marmalade” on the jar. Just get it in me.
@DrEdBridges @stephenfarrow any marmalade I buy already seems to specify what is in it, whether oranges, lime or even onions