This is because, although the listed countries are part of the EU, they do not yet apply the Schengen acquis which dictates rules for Schengen area countries with land borders.
Though Britons do not need a visa for holidays to the EU, there are specific rules on passports which have now come into action.
As of January 1, Britons may not be allowed entry to an EU country unless they have six months or less before their passport expires.
They should also ensure their passport was issued no longer than 10 years ago.
Brexit: A timeline to Brexit (Image: DX)
READ MORE