
You have two options. The pup can come in at 8 weeks without a pet passport and do the 6 months in quarantine, so that you get to take it home at 8 months old.
Or you can bring it in via the Pet Passport route, where it'll be vaccinated against rabies at 3 months of age, then blood tested a month later, and
if the blood test shows sufficient immunity, the pup will be able to enter the UK, without quarantine, 6 months after the date the blood was taken - so it'll be a minimum of 10 months old.