SORAI

See London’s key attractions across 2 routes with over 25 stops, plus audio commentary in 11 languages and a Thames river cruise.
Source · Skiddle
Expect a warm, easy crowd — busy enough to feel alive, calm enough to talk. It's built for meeting people — solo arrivals do fine here.
Pricing is moderate, and the event runs Wed 08:30. You'll find it at Central London — the surrounding blocks carry the same energy, so the night doesn't have to end at one address.
Set times, the crowd, how to get in, what's good on the menu — ask anything about Hop-on Hop-off London + Thames River Cruise 48-hour Bus + River .