Dubai is UTC+4 (GMT+4, no DST). London is UTC+0 (GMT) / UTC+1 (GMT+1). London is currently 3 hours behind Dubai.
Best times to meet (Dubai local time): 12:00 PM — 9:00 AM in London; 1:00 PM — 10:00 AM in London; 2:00 PM — 11:00 AM in London; 3:00 PM — 12:00 PM in London; 4:00 PM — 1:00 PM in London.
Times shown in Dubai local time → London local time. Based on business hours 09:00–17:00.
Dubai observes Gulf Standard Time (GST, UTC+4) year-round. The UAE has never observed Daylight Saving Time, making Dubai one of the most consistent timezone anchors in the world for scheduling purposes. GST is shared by the UAE and Oman. The fixed UTC+4 position places Dubai midway between Europe and Asia — it is 4 hours ahead of London (GMT), 9 hours ahead of New York (EST), and 4 hours behind Singapore (SGT) — a location that historically made the Persian Gulf a trading crossroads between East and West.
Dubai has transformed into a global business hub in the 21st century, hosting regional headquarters for hundreds of multinational corporations, a major international airline (Emirates), and one of the world's busiest airports by international passenger traffic. The Dubai Financial Market (DFM) and Abu Dhabi Securities Exchange (ADX) operate Sunday to Thursday — the UAE workweek runs Sunday through Thursday, with Friday and Saturday as the weekend (though some private companies use Monday–Friday). This creates a narrow window of weekday overlap with European and American counterparts: Sunday in Dubai is a workday while Europe is on weekend, and Thursday in Dubai ends before much of the Americas starts its week.
The lack of DST means Dubai's offset to summer-time Europe briefly narrows: when London is on BST (UTC+1) in summer, London–Dubai difference is only 3 hours instead of 4. When New York is on EDT (UTC−4) in summer, the New York–Dubai gap narrows from 9 to 8 hours. These changes are on the other parties' side, but awareness is important for anyone scheduling across the Dubai–Europe or Dubai–Americas boundary.
London operates on Greenwich Mean Time (GMT, UTC+0) in winter and British Summer Time (BST, UTC+1) from late March to late October. The city sits at the Prime Meridian — longitude 0° — established at the Royal Observatory in Greenwich in 1884 when the International Meridian Conference adopted Greenwich as the world's reference point for time and longitude. The GMT standard was already in widespread use because of Britain's dominance in maritime navigation and the railway network, which demanded a single national time to replace the patchwork of local times that differed by minutes from town to town.
The UK introduced Daylight Saving Time during World War I in 1916, following Germany's lead, to reduce coal consumption by extending evening daylight. Today DST is governed by EU rules (retained in UK law post-Brexit), meaning the clocks change on the last Sunday of March and October. London is one of the world's most important financial centres: the London Stock Exchange opens at 08:00 GMT and closes at 16:30, overlapping with Asian market closes in the morning and US market opens in the afternoon — a position that helps make London the largest foreign-exchange trading centre on earth.
Because London is UTC+0 in winter, it serves as a natural reference point for international scheduling. A meeting at "noon UTC" is noon in London from November to March. The city is 5 hours ahead of New York (EST) in winter and 8 hours behind Tokyo (JST), making it the pivot of East–West business communication.
London is currently 3 hours behind Dubai.
When it is 12:00 noon in Dubai, it is 09:00 in London (based on current offsets — verify during DST transitions).
Dubai does not observe DST — GMT+4 is used year-round. London observes DST, changing from GMT to GMT+1.