They’ll need to have:
All pets with the Canvac R vaccination must be at least 17 weeks old before they travel.
If a dog has the Canvac DHPPiL + R vaccine, both of the following must apply:
All dogs must also be at least 21 weeks old before they travel.
Bringing your pet dog, cat or ferret to Great Britain: Rabies vaccination, boosters and blood tests - GOV.UK (www.gov.uk)