Is the “rooftop bar” hype really worth the extra travel?

United Kingdom: Most tourists think any bar with a view is a must‑visit, but the real gems are the ones that keep their addresses under wraps. The real question is: can you find a place that feels exclusive without the line that never ends?
Introduction
London’s skyline is a puzzle of glass and steel, and when the weekend turns into a blur of work emails and supermarket runs, a rooftop bar can feel like a secret door to another world. I’ve spent the last year testing the city’s high‑rise watering holes, and here are the five that make a proper…