London locals can spot an unprepared tourist a mile away.

With its royal charm, winding streets, and endless cultural landmarks, London draws in visitors year-round. But as magical as it is, the city has its own rhythm—and tourists often miss the beat. Blending in isn’t about ditching your excitement; it’s about skipping the small, cringe-worthy mistakes that scream “first timer.” Avoiding these missteps doesn’t just earn you local respect—it saves you time, money, and a bit of embarrassment, too.
Londoners are famously polite but also unapologetically efficient. That means there are a few unspoken rules you’re expected to follow, especially on public transport and in busy neighborhoods. Simple oversights—like how you walk or what you say—can instantly give you away. If you’re planning to visit, knowing what not to do can totally upgrade your experience. These nine common mistakes might not seem like a big deal, but fixing them will help you feel more like a savvy traveler and less like a tourist cliché.