Visit the tower for city views; tickets for the second floor or summit should be booked early to avoid long lines — opening times vary, typically from ~9:00am.
Tour the Hall of Mirrors and royal apartments — palace hours generally ~9:00am–6:30pm (closed Mondays); include gardens and Grand Trianon if time allows.
High-speed international train to Brussels takes about 1h30m–1h50m; book in advance. This is the recommended inter-country option for speed and comfort.
Direct Eurostar runs between Amsterdam and London in about 4h; this is the recommended inter-country rail option to cross the North Sea comfortably — book well in advance for best fares.
Choose the British Museum (ancient world collections, free entry) or the National Gallery (masterpieces in Trafalgar Square) depending on your interests; museums generally open ~10:00am.
Direct high-speed train takes about 4h20m–4h40m; recommended as the comfortable inter-city rail option with great scenery — book in advance for best fares and reserved seats.
If you prefer to return to London for your international flight, take an evening LNER (~4h30m) arriving late at King's Cross; otherwise stay overnight in Edinburgh and fly from Edinburgh on Day 10.
If departing from London, take the Heathrow Express (from Paddington), Gatwick Express, or a taxi depending on your terminal — allow at least 3 hours for international flights to India. If departing from Edinburgh, allow at least 2.5–3 hours for check-in and connections.
Book international trains (Thalys/Eurostar/Intercity/LNER) well in advance for best fares and reserved seats. Carry passport for border checks on Eurostar and allow extra time for security/immigration at London/Eurostar terminals.