Difference time between United kingdom and French Guiana in hours, minutes, and seconds is [ +4 hours ] with gregorian date today is Thursday 11th of September 2025 in British local time, Where the time now in United kingdom is 20:40 PM and the time now in French Guiana is 16:40 PM in French Guianese local time and the time comparison between United Kingdom of Great Britain & Northern Ireland and French Guiana in greenwich time ( GMT ) where United kingdom advanced about greenwich time ( GMT +01:00 ) while French Guiana late for greenwich time ( GMT -03:00 ).