The Foreign Office has issued a warning to parents whose children are planning to travel to Spain alone. Spanish law considers anyone under the age of 17 to be a minor and requires them to be accompanied by an adult. Additionally, the UK is not part of the Schengen zone, so passports must meet specific criteria, including a validity period of at least 10 years and an expiry date at least three months after departure. It’s essential to check travel requirements before traveling to avoid any issues.