Prince William and Kate have left the UK with Prince George and Princess Charlotte to begin their five-day tour of Poland and Germany.
The Duke and Duchess of Cambridge will arrive with their royal children in Warsaw at midday.
They are expected to touch down at 12.45pm.
William and Kate’s trip, taken at the request of the Foreign and Commonwealth Office, is likely to be seen as another Brexit diplomacy, helping to maintain and strengthen the UK’s relations with Europe as it leaves the EU.
But all eyes will be on the couple’s children, George aged three and two-year-old Charlotte , who are used to travelling overseas having joined their parents in Canada last year for an official trip.
The trip is expected to include everything from touring the Elbphilarmonic Concert hall in Hamburg, visiting the Gdansk Shakespeare Theatre and stopping at the Brandenburg Gate in Berlin.