Check in or drop luggage at Park Plaza Westminster Bridge (or similar accessible central hotel). Have a calm buffet breakfast at the hotel with seating and lift access — relaxed start and minimal walking. Hotel breakfast service typically runs 7:00–10:00; confirm at booking.
Gentle stroll or short taxi ride to see Buckingham Palace and walk a flat, landscaped path through St James's Park — great for photos and easy benches for rests. The palace exterior is viewable any day; Changing of the Guard happens on selected days (check schedule).
Visit Westminster Abbey to see the historic interior, coronation sites and memorials; seating and accessible routes are available, but there are some steps so ask staff for assistance or the accessible entrance. Typical opening is 9:30–3:30 (may vary); book tickets in advance to avoid queues.
Take a short taxi or tube (one stop) to Trafalgar Square and eat at the National Gallery café or a nearby accessible restaurant for a calm lunch with reliable seating. National Gallery café is open around 10:00–18:00 and is wheelchair friendly.
Return to Westminster Pier area at a relaxed pace and use the public benches or hotel lounge if you need a sit-down before the cruise. Plan travel time by taxi to reduce transfers; Jubilee/Waterloo stations nearby for step-free options in some stations.
Take a seated Thames River cruise east to the Tower of London — an easy, scenic way to see riverside landmarks without much walking. Cruises run frequently; typical daytime crossings last about 1 hour. Boats are generally accessible but confirm accessibility when boarding.
Visit the historic Tower of London to see the White Tower and Crown Jewels area; request accessible routes and use benches to rest between rooms. Typical winter/shoulder-season closing times are around 16:30–17:30 (last entry earlier) — check exact closing time and prioritize the Crown Jewels if time is short.
Take a taxi back to the hotel near Westminster or South Bank to relax, freshen up and use lift access. This is a good half-hour to an hour break before dinner for seniors to rest and change.
Dinner with Thames views at Gillray's (County Hall) — accessible seating and an early dinner service (typically from 17:00). If you prefer to stay in, the hotel restaurant offers familiar, quieter options suitable for seniors. Reserve a table and request accessible seating.
If energy allows, take a flat, well-lit evening stroll along the South Bank to see the city lights (Benches and cafes available) or return to your room for an early night. The South Bank promenade is accessible and well-suited for a peaceful end to the day.