If you’re planning your trip, aim for late November or early December. The crowds are thick but manageable, like a friendly rugby scrum. Bring a scarf you don’t mind smelling like mulled wine for a week. And don’t bother trying to get a perfect photo; you’ll end up with eighty pictures of someone’s head.
Here’s the real secret: you don’t need to be at the exact switch-on time. The lights stay on until early January, usually around the 5th or 6th. So if you value your sanity, go on a Tuesday evening in December. The streets are quieter, the lights are still stunning, and you can actually walk without elbowing a tourist holding twelve shopping bags.
In the end, knowing the exact date is just an excuse to plan a night out. Christmas lights in London are a warm hug in a cold city. They remind you that even when your train is delayed and your bank account is weeping, there’s still beauty in the chaos. So wrap up, go early, and when the lights come on, let yourself smile like a kid who just found an extra present. You’ve earned it.