Smilling Queen's Guard

The British Army had regiments of both Horse Guards and Foot Guards predating the English Restoration (1660), and, since the reign of King Charles II, these have been responsible for guarding the Sovereign Palaces.
The Queen's Guard in London changes in the Forecourt of Buckingham Palace at 11:30am every day in the summer and every other day in the winter. The Guard comprises two detachments, one each for Buckingham Palace and St James's Palace, under the command of the Captain of The Queen's Guard.