Original sentence: It is based on the tradition of giving gifts (a "Christmas box") to the less fortunate members of society.The name derives from the fact that the day was traditionally marked by the giving of Christmas boxes, or gifts, to service workers (such as service staff, postal workers and trades people) in the United Kingdom
Edited sentence: It is based on the English tradition of the better off people giving gifts (a "Christmas box") to the less fortunate members of society.The name derives from the fact that the day was traditionally marked by the giving of Christmas boxes, or gifts, to service workers (traditionally laborers, servants, service staff, postal workers and tradespeople) in the United Kingdom