 De facto travel documents are documents which in practice will be sufficient to cross borders legally, but with no legal status as a travel document.Within the Border Controls in the Common Travel Area, travel between Ireland, the United Kingdom, the British Crown Dependencies, Isle of Man and Channel Islands, no travel documents are required by British or Irish citizens.As this requirement does not hold for others, these citizens have to establish the presumption of having this nationality, which requires in practice some form of identification.