Difference time between United kingdom and Antigua and Barbuda in hours, minutes, and seconds is [ +4 hours ] with gregorian date today is Saturday 21st of March 2026 in British local time, Where the time now in United kingdom is 00:27 AM and the time now in Antigua and Barbuda is 20:27 PM in Antiguan local time and the time comparison between United Kingdom of Great Britain & Northern Ireland and Antigua and Barbuda in greenwich time ( GMT ) where United kingdom advanced about greenwich time ( GMT +01:00 ) while Antigua and Barbuda late for greenwich time ( GMT -04:00 ).