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London Time Zone — BST (UTC+01:00)

London, UK runs on Greenwich Mean Time at UTC+01:00. It is currently observing daylight saving time (UTC+01:00), and will return to standard time (UTC+00:00) on Sun, Oct 25, 2026. Convert London time to any city below, or use the full converter.

Current UTC offset
UTC+01:00
IANA zone
Europe/London
Daylight saving
Observed — clocks currently forward
Zone abbreviation
BST / GMT

About the BST time zone

Greenwich Mean Time (GMT) is the clock time at the Royal Observatory in Greenwich, London, which sits on the Prime Meridian (0° longitude). GMT serves as the reference point from which all other time zones are calculated. The United Kingdom uses GMT during winter months and switches to British Summer Time (BST, UTC+01:00) from late March to late October. Several West African nations use GMT year-round. GMT is often used interchangeably with UTC (Coordinated Universal Time), although technically they are different – UTC is based on atomic clocks while GMT is based on Earth's rotation.

Countries on BST
United KingdomIrelandIcelandPortugal (mainland)GhanaSenegalMaliMauritaniaGambiaGuineaSierra LeoneLiberiaIvory CoastBurkina FasoMorocco (historically)
Major cities on BST
LondonDublinLisbonAccraReykjavikEdinburghCasablancaDakarBamakoAbidjanConakryFreetownMonrovia
Did you know?
  • London was the first city to have an underground railway, opening in 1863.
  • Greenwich Mean Time (GMT) is defined by the Prime Meridian at the Royal Observatory in Greenwich, London.
  • Big Ben is actually the name of the bell inside the Elizabeth Tower, not the tower itself.

Convert London time to another city

Convert another city's time to London

Convert London time to a time zone abbreviation

Convert London time to a country

Everything else on BST

Learn more about time zones