The so called "Chav" uniform - tracksuits, gold chains, caps and trainers, is literally just the standard uniform of British working class lads, so it's not even subtle..chav is a slur, not a subculture. The idea it is a subculture was a media fabrication.

Some restaurants have banned "sportswear" which also happens to specifically ban baseball caps, tracksuits, as well as certain brands of trainers. It's essentially a "working class lads are not welcome here" sign.

Britain has a huge classism problem.

The disdain, distrust, and dehumanisation aimed at lads in tracksuits, gold, and caps - the classic white, working-class British outfit, is absurd. Restaurant bans on these clothes are just a thinly veiled way of saying “white, working-class lads are not welcome here.” People talk with such hostility you’d think their families were devoured by tracksuit wearers, yet it’s this very British working class that fundamentally built modern Britain.