What did The Trafalgar Way and John Richards Lapenotiere black plaque do at Canada House?

The Story
# The Trafalgar Way at Canada House Standing at Canada House in Trafalgar Square at one o'clock in the morning on Wednesday 6th November 1805, Lieutenant John Richards Lapenotiere's post-chaise thundered past this very spot, carrying the most momentous news England had awaited with bated breath for days. After an extraordinary 37-hour journey covering 271 miles from Falmouth, the young naval officer was mere minutes away from the Admiralty, where he would deliver his historic dispatch with words that would echo through the nation: "Sir, we have won a great victory, but have lost Lord Nelson." This location marks the final turn in Lapenotiere's legendary dash through the English night—the precise moment when he swung down Whitehall toward the Admiralty building, transforming from a exhausted courier into the messenger of Nelson's death and Britain's triumph at Trafalgar. In those last few seconds before delivering news that would define a nation's identity, Lapenotiere passed this corner, and in doing so, made this ordinary London street a vital waypoint in one of history's most consequential journeys.
Location
Canada House, Trafalgar Square