In the United Kingdom, Father's Day has been observed since the early 20th century and has become an increasingly popular holiday in recent years.

It's not a public holiday, but it is a day to recognise and celebrate fathers and father figures, such as grandfathers and stepfathers.

Typically observed annually on the third Sunday of June, Father's Day is an opportunity to honor fathers and recognise the impact they have on our lives. On this day, children can express their appreciation and admiration for their fathers, while adults can reflect on the positive influence that fathers make to society.

Father's Day remains a significant and important day of celebration in the United Kingdom, although it may not be celebrated to the same degree as it is in other countries, such as the United States and other countries which are predominantly Catholic.

It has been suggested that Father's Day has some connection to St. Joseph, a well-known saint in the Catholic Church. He is seen as the protector of fathers and his feast day is marked on March 19th. However, Father's Day is a secular celebration and is not connected to any particular religion or to the celebration of St. Joseph or any other saint.

This modern holiday is intended as a way for children to express their admiration and gratitude towards their fathers for the care and support they provide. It also serves as an opportunity for families to come together and recognise the significant role fathers have in their lives.