After breakfast at the hotel, I went to Buckingham Palace in time for the changing of the guard at 11:00. The palace wasn't overrun with tourists but I avoided the area around the fence and just took some long distance photos. Two sets of horse guards passes right by me on the main road, one in each direction. The Gurkha guard band also marched by along the Main Street. The Gurkhas are Nepalis and Indians. The queen's helicopter also flew in and landed in the backyard of the palace.
After the morning festivities, I took the tube to Hampstead and took a walk to Hampstead Heath Park. I went to Parliament Hill to see the view of central London but it wasn't so great. I left the park on the other side and went to the Tufnell Park underground station to go back to central London.
After returning to Charing Cross, I sat in a coffeehouse and waited for darkness in order to take some night photos of Trafalgar Square.
There was a group there setting up spotlights on Nelson's Column which is the primary monument in the square. With the lights the photos really popped.