Two days in London do not need to prove that you have seen London. Give the first day to the river and the second to one museum and the streets around it. The outline below is deliberately loose. It leaves room for weather, queues and the cafe you find without turning a short break into a sequence of appointments.
Day one: use the Thames as the route
Begin on South Bank and choose a stretch of the riverside that suits your energy. Walk toward Tate Modern rather than making every bridge or landmark a separate task. The water gives the day continuity; a bench, a coffee stop and the changing view can be enough between the larger stops.
One indoor anchor, not several
Tate Modern is the natural indoor option for this river day. Its collection is free to visit; some exhibitions require separate tickets. Decide whether you want a short collection visit or a booked exhibition, then protect the rest of the afternoon from extra obligations. Check the current visitor page for access and closures before going.
Let the evening stay local
You can finish with dinner along your route, or make a separate journey to Covent Garden if a theatre evening is the point of the trip. Do not treat the two as one effortless continuous walk. Plan the transfer, allow a pause before a performance, and avoid booking dinner so tightly that a delayed journey spoils both.
Day two: a museum morning with an exit plan
Use the British Museum as the main visit if its collection interests you. General entry is free and advance booking is recommended; exhibitions can need their own ticket. Pick a few galleries rather than planning to absorb the whole museum. Check gallery availability, because parts of the collection can close temporarily.
Leave the afternoon open
After the museum, stay with the surrounding streets or move toward Covent Garden for a meal and a short wander. If the South Kensington museums matter more to you, replace this whole day with one of them and keep the afternoon nearby. The swap is more useful than trying to fit both museum districts into the same day.
Weather and walking
In wet weather, shorten the exposed river section and give the indoor anchor more time. On a bright day, do the reverse. Use the TfL planner for the exact journeys, especially when a route depends on weekend service. This outline does not promise fixed walking times or step-free access; check the route that fits your needs.
Before you go
Choose the one booking that matters, verify its entry conditions and leave the other parts flexible. London rewards a second visit. You do not need to borrow time from the first one to prepare for it.
Sources and planning links
Transport for London journey planner
Official sources checked on 30 September 2026. Opening conditions, transport service and booking terms can change. This guide is planning advice, not a booking or a promise of access.