Thames clippers aren't just tourist boats — They're proper public transport that londoners actually use. Routes run from westminster to greenwich and beyond, stopping at tate modern, london bridge, tower bridge, canary wharf.

Accepts oyster card just like the tube, roughly £8 for central london journeys. Takes longer than underground but the views are incredible and you completely avoid the crowded tube network.

Best route is westminster to greenwich — You pass parliament, london eye, st paul's, tower of london, and end at the maritime museum.