London's Underground carried millions of riders across 11 lines and was voted Europe's best public transit system in 2025 by Time Out — yet visitors still manage to get on locals' nerves within minutes of stepping through the ticket barriers. The Tube runs on a set of unwritten rules, and Americans in particular seem to break all of them on day one.

The biggest gripe, according to a Hackney Gazette reader poll, is failing to move down the carriage after boarding. Half of those surveyed named it their top annoyance. Crowding around the doors slows everyone down, so locals expect you to step inside and make room the moment you're on.

Escalators are another flashpoint. Unlike UK roads, the rule here is to keep right — standing on the left blocks the commuters racing up behind you, and parking a suitcase beside you makes it worse. Do it during rush hour and you may well earn yourself a very British insult: "numpty."

Boarding etiquette matters too. Let passengers off before you push in — the train behind is usually only a few minutes away, so there's no need to treat the doors as a do-or-die scramble. Step aside, wait for the exit flow to clear, then board.

Backpacks are a quiet menace in a packed carriage. Locals expect them off your shoulders before you board: on your lap or between your feet if standing, in front of your legs if sitting. TfL even ran a "Travel Kind" poster campaign encouraging exactly this, and the same campaign targets "headphone dodgers" — people playing music or videos out loud or taking calls on speaker. The Tube values its silence, and the government has floated fines of up to £1,000 for disturbing it.

For travellers, this isn't about walking on eggshells — it's about blending in and moving faster. The Tube is one of the most efficient ways to see London, and following these five habits (move down the carriage, keep right on escalators, let people off first, stow the backpack, use headphones) will make your journey smoother and spare you some serious side-eye from commuters who just want to get home.