The Princess Royal will today attend an historical re-enactment of the moment Britain received news it had defeated French emperor Napoleon at Waterloo to mark the 200th anniversary of the battle.
Actors dressed as Major Henry Percy and Commander James White, who carried the original victory message to the Prince Regent in June 1815, have retraced the route across Europe.
They will travel across London in a horse-drawn carriage with replicas of the two captured Imperial Eagles and Standards of the French army.
Setting off from the Old Royal Naval College in Greenwich, south London, they will ride through the capital, crossing Tower Bridge for ceremonies at the Tower of London, where they will be joined by an Honourable Artillery Company Light Cavalry escort.
They will eventually arrive at St James's Square and the Waterloo Room in the East India Club, where the message of victory was originally received by the Prince Regent.
The replica Eagles will be laid before Anne by Major Percy in imitation of the moment, two centuries ago, when Britain was told of its historic victory.
The carriage will then depart to join the Waterloo Parade from Horse Guards Parade down The Mall, accompanied by military bands.
The ceremony marks the culmination of around a week of events to mark the 200th anniversary of the Battle of Waterloo.
British military commander the Duke of Wellington led Allied Forces to a final, crushing victory over Napoleon on June 18 1815.