Like Christmas day, Boxing Day is a public holiday in Great Britain. It was traditionally a day when people would give gifts or money in “Christmas boxes” which were given on the day after Christmas.
In the past, many poor workers were required to work on Christmas Day and took the next day off to visit their families. They were given a Christmas box as they left.
During the 18th century, Lords and Ladies would put food leftover from Christmas day in boxes and give them to people that lived on their land.