Fun fact: there’s no general concept of image/likeness rights in the UK, and photographers own the full copyright of any photos they take.

There are other laws that come into play if you were in a private place or if your likeness is used to falsely imply endorsement, but otherwise if someone takes your photo in public they can do whatever they want with it.

(Obvious disclaimer that I’m not a lawyer but the above is my understanding of the law.)