Quick update in case you’re interested. We went, we saw, we had a great time. Arrived after lunch. Drop bags at hotel. Quick walk to Nat History museum. Loved it!!! Dinosaurs were fab. Then hop on/off bus for an hour. Bought food at M&S. Back to hotel. Eat, shower bed for kids. Not long after for us. Next day up early. Breakfast, pack. Left big bags at hotel. Tube to Buck Palace. (Youngest disappointed it wasn’t more sparkly). Walk thro St James park. By chance hit on changing of guard. Fab. Walk to Westminster bridge. Boat tour to Tower - again fab. Sandwiches on a bench. Found hop bus and had great tour with a brilliant guide commentating. Off at nearest stop to get tube back to hotel. Bags collected, back to train station, quick McDonald’s and home. Had a wonderful time. Kids loved it. Many memories made. Thanks for all the tips. Did initial photos as suggested and put air tags on chains round necks too. 10/10 😊