Quick answer
9 AM CET is 8 AM GMT in London (winter). In summer, 9 AM CEST (UTC+2) is 8 AM BST (UTC+1). The UK is always 1 hour behind Central European Time — both the UK and EU observe daylight saving on the same date, preserving the 1-hour gap year-round.
9 AM CET to London: what to know
The UK and continental Europe both observe daylight saving starting on the last Sunday of March and ending on the last Sunday of October. Because both regions change on the same date, the 1-hour gap between CET (UTC+1) / CEST (UTC+2) and GMT (UTC+0) / BST (UTC+1) stays consistent year-round. 9 AM CET always equals 8 AM London.
For EU–UK intra-European calls, the overlap window is generous — both teams share most of the working day. A 9 AM CET start (8 AM London) gives both sides a full joint working day ahead. For the full window across multiple European cities, use the London to Paris planner or the Meeting Time Finder.
What is 9 AM CET in London?
9 AM CET is 8 AM GMT in London (winter). In summer, 9 AM CEST (UTC+2) is 8 AM BST (UTC+1). The UK is consistently 1 hour behind central Europe — 9 AM continental Europe always reaches London 1 hour earlier.
Does the 1-hour CET–UK gap ever change?
Very briefly. Both the UK and EU observe daylight saving on the same date (last Sunday of March and October). The 1-hour gap holds for essentially the entire year.
Is 9 AM CET a good slot for a Paris or Berlin to London call?
Yes. 9 AM CET = 8 AM GMT means Paris or Berlin is starting their day while London is one hour behind. Both teams are early-morning. Many EU–UK calls use 9–11 AM CET / 8–10 AM GMT.
What cities are on CET?
CET (UTC+1) covers Paris, Berlin, Amsterdam, Brussels, Rome, Madrid, Zurich, Vienna, and most of continental western Europe. In summer, these cities use CEST (UTC+2).