Tens of thousands of participants, including Irish marching bands, dance troupes, and community groups, gather in London for the annual St. Patrick’s Day Parade. The procession commences at Hyde Park Corner, proceeding through Piccadilly, St James’s Street, Pall Mall, Cockspur Street, and Whitehall, culminating at Trafalgar Square. The event celebrates Irish culture and heritage, featuring live performances, traditional food stalls, and family-friendly activities.