Why This Matters

The UK operates on GMT (UTC+0) in winter and BST (UTC+1) in summer. The abbreviation 'GMT' is commonly used year-round by people referring to UK time, but this is technically incorrect during summer months. If someone says '3pm GMT' in July, they may mean 3pm BST — which is actually UTC+1, not UTC+0. TimeMeaning flags this ambiguity.