I checked the Football Supporters Federation website for information after I read the reports about Section 27 notices being served on Birmingham City fans. It has a FAQ on Section 27 page and downloadable fact sheet. If you are in the same position as I was and don’t know much about this topic, I suggest you check out the information by clicking here. The FSF advises fans to print a copy of the fact sheet and take it with them to matches.
I didn’t go to Leicester and don’t know any details of the incident on Friday evening so I obviously can’t comment on whether or not the police acted reasonably. I understand that the fans concerned have contacted the FSF and BCFC and that the matter is being investigated.