Passports: What are the post-Brexit rules for dual-nationals travelling in Europe?

People who have more than one citizenship often hold multiple passports, so what does this mean for crossing borders? Here's what you should know.

Passports: What are the post-Brexit rules for dual-nationals travelling in Europe?
People who have more than one citizenship often hold multiple passports, so what does this mean for crossing borders? Here's what you should know.