Traditionally, which country gifts the Christmas tree that is placed at Trafalgar Square in London?

The Trafalgar Square Christmas tree is a tree donated to the people of Britain by the city of Oslo, Norway each year since 1947. The tree is prominently displayed in Trafalgar Square from the beginning of December until 6 January (the Epiphany, when the Three Wisemen visited Jesus). The Christmas tree has been an annual gift to the people of Britain as a token of gratitude for British support to Norway during the Second World War. The tree is a beautiful backdrop for traditional carol-singing programmes, performed by different groups raising money for voluntary or charitable organizations.

The tree is typically a 50 to 60 year-old Norway spruce, generally over 20 metres tall. It is cut in Norway sometime in November each year during a ceremony attended by the British Ambassador to Norway, the Mayor of Oslo, and the Lord Mayor of Westminster. The Trafalgar Square tree is decorated in a traditional Norwegian style and adorned with approximately 500 lights. The tree remains up until just before the Twelfth Night of Christmas, when it is taken down for recycling. The tree is chipped and composted, to make mulch.