What is a national identification (ID) document?
A. Citizens of some countries are issued with a national identification document/card. The new certificate has been developed for universal use and documentation of national ID is more applicable to those who are nationals of such countries. There is currently no equivalent to a national ID document/card in the UK and therefore, this space should be left blank for British citizens. Some British travellers may wish to note their passport number here, but this is not essential.