Why does UK have BST?

Why does the United Kingdom adopt British Summer Time (BST), and what are the key factors that drive this decision? Are there specific benefits that BST brings to the country, or are there any drawbacks that should be considered? How does BST impact the daily lives of UK residents, including their work schedules, social activities, and travel arrangements? And finally, are there any plans to change or adjust BST in the future, or is it a well-established tradition that is unlikely to change?