Quick answer: In 2026, the clocks go back one hour at 2am on Sunday, 25 October. This marks the end of British Summer Time (BST) and returns the UK to Greenwich Mean Time (GMT). The change gives the country an extra hour in bed but shifts daylight earlier into the morning, and it also alters the overlap between UK business hours and the working day in countries across Asia, Africa, and the Americas.
Every autumn, the UK turns its clocks back, and every autumn, a fair few of us forget until we’re an hour early to Sunday brunch. Beyond the mild confusion, this seasonal shift has real, practical effects, especially if your week involves coordinating with people, banks, or businesses in other time zones.
This guide covers exactly when the clocks change in 2026, what “falling back” actually means, and how the shift can affect everyday tasks such as international money transfers, banking hours, and customer support availability.
When exactly do the clocks go back in 2026?
The clocks go back at 2am on Sunday, 25 October 2026. At that moment, clocks move back to 1am, giving everyone an extra hour that day. This happens on the last Sunday of October every year, marking the end of British Summer Time and the return to GMT.
Most smartphones, laptops, and smart devices adjust automatically. Analogue clocks, oven timers, and older car dashboards, however, still need a manual nudge.
What does “clocks go back” actually mean?
“Clocks go back” refers to the end of British Summer Time (BST), when the UK switches from BST (GMT+1) back to standard Greenwich Mean Time (GMT). Between late March and late October, the UK observes BST to make better use of natural daylight during the evening. Once October ends, the clocks revert to GMT, and daylight shifts back toward the morning.
In short:
- Spring forward: Clocks move forward one hour in March, marking the start of BST.
- Fall back: Clocks move back one hour in October, marking the return to GMT.
The UK has used this seasonal adjustment since 1916, originally introduced to save energy during the First World War. It has remained in place ever since, shaping how the country schedules everything from school runs to international meetings.
How does the October clock change affect UK business hours?
This is where the clock change becomes more than a lifestyle quirk. When the UK moves from BST to GMT, its time difference with other regions shifts too, even though nothing changes on their end.
For example:
- UK and South Asia: The gap between the UK and countries such as India or Bangladesh increases by an hour once GMT begins, meaning UK morning hours now overlap less with the working day in those regions.
- UK and parts of Africa: Countries on Central Africa Time or East Africa Time may see their overlap with UK business hours shrink or shift, depending on whether they observe any seasonal time changes of their own (most African countries do not).
- UK and the Americas: Since most of the US and Canada also change their clocks back (on a different date in early November), the UK’s time difference with these regions can fluctuate briefly during the short window when the two countries are out of sync.
For anyone who relies on cross-border communication, whether that’s a scheduled video call with a colleague in Lagos or a customer service enquiry with a business in Manila, this shift can move the “shared working hours” window earlier or later in the UK day. It’s worth double-checking meeting times and support availability for the first week or two after the clocks change, since automated calendar tools don’t always account for a receiving country’s own time zone rules.
Does the clock change affect money transfers?
Yes, indirectly. Because the clock change alters the overlap between UK daytime hours and the business hours of receiving countries, it can influence when transfers are processed and when phone-based customer support is available.
Here’s what to keep in mind:
- Processing windows: Many money transfer services process transactions based on business hours in both the sending and receiving country. If the UK’s overlap with a receiving country’s working day shifts by an hour, a transfer sent late in the UK afternoon might now land just after the receiving bank’s cut-off time, or comfortably before it, depending on the country.
- Customer support hours: UK-based phone support lines typically operate on UK local time. Once GMT begins, the actual UTC time of those support hours shifts, meaning that if a receiving country’s support team was calibrated to overlap with BST hours, that overlap window changes with the clocks.
- Bank holidays: The October clock change is not a bank holiday in the UK, so banks and money transfer providers operate as normal on that Sunday. There is no closure or reduced service specifically tied to the clock change itself.
If you regularly send money internationally around this time of year, it’s worth checking the specific cut-off times and support hours listed by your provider rather than assuming they stay fixed relative to the receiving country’s clock.
How can you prepare for the clocks going back?
A few small habits make the transition smoother:
- Check device settings the night before. Most phones and computers update automatically, but it’s worth confirming, especially if you rely on alarms for early commitments.
- Manually adjust analogue clocks and appliances. Ovens, microwaves, and older car clocks won’t update themselves.
- Review any scheduled international calls or transfers. If you have recurring meetings or payments involving other countries, check whether the time difference has shifted.
- Expect earlier evenings. Once GMT begins, it gets dark noticeably earlier, often by late afternoon. Planning outdoor activities or commutes with this in mind can help avoid last-minute surprises.
Adjusting to shorter days ahead
The clocks going back on 25 October 2026 marks more than just an extra hour of sleep. It resets the UK’s relationship with daylight and, for a short window, subtly reshapes how the UK’s working day lines up with the rest of the world. Whether you’re scheduling a call with a colleague overseas or timing a transfer to arrive before a receiving bank closes, it’s worth taking a moment to double-check the details rather than assuming last month’s timings still apply.
Frequently Asked Questions
What date do the clocks go back in 2026?
The clocks go back at 2am on Sunday, 25 October 2026, marking the end of British Summer Time and the start of GMT for the winter months.
Do the clocks go back or forward in October?
The clocks go back in October, moving from 2am to 1am. This gives an extra hour of sleep and shifts daylight earlier into the morning rather than the evening.
Are UK banks open on the day the clocks change?
Yes. The clock change falls on a Sunday and is not a bank holiday, so UK banks operate their normal Sunday hours (typically closed, as most high street banks don’t open on Sundays regardless of the clock change).
Why does the time difference with other countries change in October?
When the UK switches from BST to GMT, it moves an hour “backward” relative to countries that don’t adjust their clocks, or adjust them on a different date. This shifts the overlap between UK daytime hours and business hours abroad, even though the other country hasn’t changed anything.
How long does the UK stay on GMT?
The UK remains on GMT from the last Sunday of October until the last Sunday of March, when the clocks spring forward again and British Summer Time resumes.
