Football Shirt Ban
A campaign appears to be building on Facebook (sometimes with a racist or at least anti-PC tinge) and in media (Daily Star). This gives a bit more detail. It seems no more than advice to pubs in Croydon. Many pubs already impose rules against soccer shirts anyway. Whilst it may be good advice. It may also be bad advice if many fans turn up in team colours - including those of other teams (Brazil favoured by many as a second stylish alternative to one's own) - then kick off when refused entry.
Let's see how this turns out.