A bit of history
Around 1840, Anna Russell, Duchess of Bedford and lady-in-waiting to Queen Victoria, found the afternoon long between lunch and an ever-later dinner. She had tea, small cakes and a few sandwiches brought up to her room, then began inviting her friends to join her. High society adopted the custom, and afternoon tea was born.
Over the 19th century, the tradition spread to every social class in different forms: low tea, taken in the sitting room, and high tea, a heartier meal eaten at the table at the end of the day.