The airline has already posted a teaser video which shows the rear of a Boeing 787 emerging from a hangar and boarding passes show famous names set which look set to be special guests on BA100.
Names shown by British Airways include Paloma Faith, Gary Oldman, Ellie Simmonds and Chris Robshaw.
Little more is known about the flight which departs at 11:30am on 1st February.
The aircraft is understood to be carrying a some kind of limited special livery and the #BA100 logo.
Find out more at https://www.britishairways.com/100