UK Passport holders issued 3 week alert as thousands must actThe passport office posted on X about the issueView Image The upgrade could save parents time down the line (Image: Getty Images)Youngsters approaching a significant milestone should be aware of an important passport rule that takes effect this year. ‌‌The Passport Office has reminded those nearing a certain birthday that they must follow a different procedure when applying for their next passport. If their birthday is less than three weeks away, skip the child passport and apply for an adult passport instead. Although young people can continue to use their child passport until it expires, they are legally required to obtain an adult passport when it comes time to renew. As of January 29, 2026, the anticipated processing time is approximately three weeks once the Passport Office receives all necessary documentation.