Ваша поездка на поезде из Amsterdam central station в London st. pancras international начинается здесь

The passenger's age will allow us to find the best fare for you. Since the definition of 'Child' and 'Youth' varies by country and rail operator, we ask for the age of young passengers. For some rail operators, children below a certain age can travel without a seat for free. If you want to guarantee a seat for child passengers, enter '4' as the age of the child. Read more about child and youth passenger ages in our FAQ page