British Summer Time: When Do the Clocks Change in 2025?

eUkVisit Logo

When Do the Clocks Change in the UK? A Guide to British Summer Time in 2025

If you’re planning a trip to London in 2025, it’s essential to stay on top of the time changes. Twice a year, the clocks in the UK shift, and this can impact everything from your sightseeing schedule to catching the latest shows. Don’t worry—we’ve got the details covered for you, so you won’t lose track of time during your visit.

British Summer Time
Clocks in the London, including Big Ben, change twice a year. Credit: Jon Reid. Image courtesy of Visit London.

When Do the Clocks Change in London?

In the UK, the clocks change twice a year: once in the spring and once in the autumn. This tradition ensures the country makes the most of daylight, with clocks moving forward in March for British Summer Time (BST), and falling back in October when the country returns to Greenwich Mean Time (GMT).

If you’re ever unsure whether the clocks are going forward or back, here’s a quick trick to remember: “Spring forward, fall back.”

Why Do the Clocks Change?

The concept of changing the clocks dates back to 1907 when William Willett, a British builder, proposed it to save daylight during the summer months. He believed that people should rise earlier to enjoy the daylight, which would also create longer evenings. The government took action in 1916 by introducing British Summer Time through an Act of Parliament, and it has been in place ever since, with only a few exceptions (like during World War II).

When Do the Clocks Go Forward in 2025?

In 2025, the clocks will go forward by one hour on Sunday, March 30th, at 1am, shifting to 2am. This marks the start of British Summer Time. As a result, you’ll get to enjoy longer daylight hours throughout the day.

When Do the Clocks Go Back?

The clocks go back on Sunday, October 26th, 2025, at 2am, shifting back to 1am. This change signals the end of British Summer Time and the return to Greenwich Mean Time for the winter months.

What is Greenwich Mean Time?

Greenwich Mean Time (GMT) serves as the foundation for timekeeping around the world. It is centered at the Royal Observatory in Greenwich, London, located at the Prime Meridian. GMT is the time standard from which all other time zones are calculated.

If you’re curious to learn more about GMT and the history of timekeeping, consider visiting the Royal Observatory in Greenwich. The museum offers fascinating exhibits about the history of time, with an opportunity to stand on the Prime Meridian Line, the imaginary line that divides the Eastern and Western Hemispheres.

Does Big Ben’s Clock Change?

You may be wondering—what about Big Ben? The iconic clock in the Elizabeth Tower, officially known as the Great Clock of Westminster, gets adjusted every time the clocks change. Each year, when the UK switches to British Summer Time, the clockmakers at the Palace of Westminster carefully adjust Big Ben to the new time in a precise operation. But it’s not just Big Ben that gets updated—around 2,000 other clocks in Westminster also get recalibrated over the weekend of the time change!

Plan Your Trip with eUKVisit.com

Understanding when the clocks change is just one way to plan your trip to London. Whether you’re here to explore the historic sites, immerse yourself in British culture, or simply enjoy the long summer evenings, knowing the time change will ensure you make the most of your stay.

Want more travel tips for your London visit? Be sure to check out our other posts on eUKVisit.com for everything you need to know about exploring the UK!