Trafalgar Square Authority in conjunction with the charity Unicef, who began ticketing the event to control crowd numbers. A Christmas ceremony has been held in the square every year since 1947. A Norway spruce (or sometimes a fir) is presented by Norway's capital city, Oslo as London's Christmas tree, a token of gratitude for Britain's support during World War II. (Besides war-time support, Norway's Prince Olav and the country's government lived in exile in London throughout the war.) The Christmas tree is decorated with lights that are switched on at a seasonal ceremony. It is usually held twelve days before Christmas Day.
Trafalgar Square Day. The square is a centre of annual celebrations on New Year's Eve. It was well known for its feral pigeons until their removals in the early 21st century. Trafalgar Square is owned by the Queen in Right of the Crown and managed by the Greater London Authority, while Westminster City Council owns the roads around the square, including the pedestrianised area of the North Terrace. The square contains a large central area with roadways on three sides and a terrace to the north, in front of the National Gallery. The roads around the square form part of the A4,