London bus tours are basically a comfortable, elevated way to cover a lot of ground without walking your feet off. Expect an open-top double-decker (or covered if it rains) looping past the main sights—Big Ben, Tower Bridge, Buckingham Palace, Trafalgar Square—with recorded commentary or occasional live guides. The hop-on hop-off format lets you get off at stops, wander, then catch the next bus, though in heavy traffic the wait can be 20-40 minutes. It's ideal if your time is short or mobility is limited, but you'll see the city in snapshots rather than really experiencing it up close.
Spring and early autumn are best—mild weather, fewer crowds than summer. Avoid winter if you hate freezing on the top deck, though the buses run year-round. Expect to pay around £25-£45 for a 24-hour ticket; multi-day or family tickets push toward the higher end. Live-guided tours usually cost more than the audio versions.
Pick a standard hop-on hop-off route that includes the main central London loop and skip the night tours or heavily themed ones unless that's your thing—they're more gimmick than substance. One honest tip: sit on the right side of the bus heading outbound for the best views of landmarks. Combine it with walking one or two areas instead of riding the whole route; the bus gets tedious after a couple of hours.
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