London Time Now: Current UK Time, GMT & BST Clock

Whether you’re scheduling a call across the pond, tracking a flight landing at Heathrow, or just curious what time it is in London right now, you’ve landed in the right place. This guide cuts through the confusion around GMT and BST, gives you the exact 2026 clock change dates from the UK government, and shows you how London stacks up against time zones from South Africa to India. No widget required—just the facts.

Time Zone: Europe/London (GMT/BST) ·
Standard Offset: UTC+0 ·
DST Offset: UTC+1 (BST) ·
DST Start: Last Sunday in March ·
DST End: Last Sunday in October

What is the time in London just now?

The current local time in London depends on whether the UK is operating under Greenwich Mean Time (GMT) or British Summer Time (BST). During GMT (winter months), London runs at UTC+0. During BST (summer months), it shifts to UTC+1. The simplest way to check is to sync your device with an internet time server, which automatically pulls from atomic clock standards.

Live clock display

A live London clock displays hours, minutes, and often seconds alongside the current date. Most digital devices update automatically when you select the Europe/London time zone. For those needing precision—scheduling international calls, coordinating with UK-based teams, or tracking flight arrivals—an internet-synced clock eliminates the guesswork entirely.

AM/PM format

UK clocks typically display time in 24-hour format for official use (such as transport schedules and broadcasting), while everyday conversation often uses 12-hour AM/PM notation. If you’re converting from a US-based schedule, remember that London is 5 hours ahead of Eastern Time (ET) during GMT, and 4 hours ahead during BST.

Is London on GMT time now?

London follows two distinct time standards depending on the time of year. The baseline is Greenwich Mean Time, which serves as the UK’s standard from late October until late March. British Summer Time takes over for the remaining months, advancing the clock by one hour to maximize evening daylight.

GMT vs BST difference

The difference between GMT and BST is straightforward: BST runs exactly one hour ahead of GMT. During BST, the UK operates at UTC+01:00 instead of UTC+00:00. The shift happens twice a year—clocks spring forward in March and fall back in October—following rules established under the Summer Time Order 2002 (Wikipedia – British Summer Time). This means summer evenings have more daylight, but mornings start darker.

Current offset check

To determine whether London is currently on GMT or BST, check the calendar against the changeover dates. From the last Sunday in October through the last Sunday in March, London runs on GMT. The rest of the year—roughly 65% of it—London operates on BST. GOV.UK – Clock Change Dates publishes the exact dates for each year, removing any ambiguity about which standard applies on any given day.

Time zone map

London sits at the prime meridian (0° longitude), which is why GMT takes its name from this city. On a global time zone map, London shares its GMT offset with countries including Iceland, Portugal (except Madeira and the Azores), and parts of West Africa. When London shifts to BST, it aligns with Central European Time countries like France, Spain, and Germany.

When do the clocks change?

The UK’s clock change schedule follows an predictable annual pattern established by law. Twice a year, nearly every clock in the country adjusts by one hour—a ritual tied to maximizing natural daylight during waking hours.

Spring forward date

In 2026, clocks go forward by one hour at 1:00 AM GMT on Sunday 29 March, jumping directly to 2:00 AM BST. This marks the start of British Summer Time and the loss of one hour of sleep for that night. The rule is consistent: it’s always the last Sunday in March at 01:00 GMT, according to GOV.UK – Clock Change Dates.

Fall back date

In 2026, clocks fall back by one hour at 2:00 AM BST on Sunday 25 October, returning to 1:00 AM GMT. This effectively adds an hour to the night, giving UK residents an extra hour of sleep. The mnemonic “spring forward, fall back” captures this: March pushes clocks ahead, October pulls them back. Visit London – Clock Change Guide notes this is how millions of people remember the direction.

2026 schedule

The full 2026 UK daylight saving schedule looks like this: BST begins 29 March 2026, and GMT resumes 25 October 2026. Looking ahead, 2027 brings the spring forward on 28 March and the fall back on 31 October, according to GOV.UK – Clock Change Dates. The dates shift slightly each year because they always fall on the last Sunday of the month.

Why is London 1 hour ahead of GMT?

British Summer Time exists because shifting the clock forward in summer creates more usable daylight in the evenings. The trade-off is darker mornings—but the idea, dating back over a century of debate, is that most people waking in darkness are heading to work indoors anyway.

British Summer Time explained

BST advances civil time in the UK one hour forward of GMT, changing the time zone from UTC+00:00 to UTC+01:00, according to Wikipedia – British Summer Time. This means mornings have one hour less daylight, while evenings gain an hour of daylight. The arrangement is defined by the Summer Time Order 2002 (Wikipedia), which sets the specific rules for when the shift occurs.

Historical context

The concept of adjusting clocks for daylight saving has roots stretching back to the early 20th century, but the modern BST rules took shape after the EU harmonized summer time across member states on 22 October 1995 (Wikipedia). The starting and finishing times of daylight saving were aligned across the European Union on that date, and the UK retained EU alignment on BST after leaving the European Union. Even post-Brexit, the UK continues to follow the same changeover Sundays as its European neighbors.

Impact on sleep

The spring forward means losing an hour of sleep that night—though the body adjusts within days for most people. The fall back in October brings relief: an extra hour of sleep, though the adjustment in reverse can sometimes disrupt sleep patterns briefly. For those sensitive to schedule changes, planning ahead by shifting bedtimes 15 minutes earlier in the days leading up to the spring change can smooth the transition.

London time comparisons: how London stacks up globally

Understanding how London time relates to other major cities helps when coordinating across time zones. The UK’s position on the prime meridian means it serves as a reference point for calculating offsets to nearly every other country.

London to South Africa offset

South Africa operates on South African Standard Time (SAST), which is UTC+2 year-round with no daylight saving. This means South Africa is always 2 hours ahead of London during GMT, and 1 hour ahead during BST. When it’s noon in London during winter, it’s 2 PM in Johannesburg.

London to India conversion

India runs on Indian Standard Time (IST), which is UTC+5:30 year-round. London is 5 hours and 30 minutes behind India during GMT, and 4 hours and 30 minutes behind during BST. The half-hour offset (30 minutes, not a full hour) is unusual globally and catches people off guard when scheduling calls between London and Mumbai or Delhi.

Five major cities, one consistent pattern: when London shifts to BST, the gap shrinks by one hour with countries also on daylight saving time, but remains unchanged with countries that don’t observe DST.

How to check London time right now

Getting an accurate read on London time takes seconds with the right approach. Here are reliable methods that don’t require installing anything or creating an account.

Key dates to remember for 2026 and beyond

Mark these dates on your calendar now—you’ll thank yourself when the time changes catch you off guard. The schedule follows a consistent pattern: last Sunday in March for spring forward, last Sunday in October for fall back.

The pattern holds year after year because it’s written into UK law under the Summer Time Order 2002. All four constituent countries of the UK—England, Northern Ireland, Scotland, and Wales—follow the same dates simultaneously.

During British Summer Time (BST), civil time in the United Kingdom is advanced one hour forward of Greenwich Mean Time (GMT), in effect changing the time zone from UTC+00:00 to UTC+01:00, so that mornings have one hour less daylight, and evenings one hour more.

— Wikipedia, British Summer Time

In the UK the clocks go forward 1 hour at 1am on the last Sunday in March, and back 1 hour at 2am on the last Sunday in October.

— GOV.UK, When do the clocks change

Related reading: Current Time in New Zealand · Time in Seattle

Our live clock displays London time now, while the time in London right now details BST status and key DST transition dates for travelers.

Frequently asked questions