Buckingham Palace has said "appropriate action" will be taken following reports that one of its Household staff was arrested after a Christmas party at a London bar.
Police are said to have been called to a bar in Victoria, which is near the palace, at 21:21 GMT on Tuesday after reports that a customer had smashed glasses and attempted to assault a member of staff.
A 24-year-old woman was arrested on suspicion of common assault, criminal damage, and being drunk and disorderly.
A spokesperson for the Palace said it was aware of an incident involving staff members outside the workplace and that the "facts will be fully investigated".