On 1st January 2021 the UK will have left the EU. Pet Travel will change and there are 3 possibilities:
The UK becomes a part 1 listed country and the situation will remain the same as present. Pet Passports issued before 1st January 2021 will still be valid.
The UK becomes a part2 listed country so in addition to the Pet Passport animals will require a health certificate probably within 10 days of travel and not less than 21 days after vaccination. The certificate would be signed, after a health examination, by an Official Veterinarian in the practice. The certificate would be valid for 4 months travel within the EU. There would be a charge for this. Pet Passports issued before 1st January 2021 will still be valid.
The UK becomes an unlisted country. In this case:
Pet Passports issued before 1st January 2021 are no longer valid.
A blood sample would need to be taken 30 days after a rabies vaccination. This blood is sent to a designated laboratory and must achieve the required antibody level. 3 months must then elapse from date of sampling before travel would be allowed.
The animal would require an examination and a Health Certificate before travel.
Re-entry into the UK would be through an as yet to be designated travellers point of entry. Your dog would require tapeworm treatment not less than 24 hours and not more then 120 hours with a product containing praziquantel before re-entry. This would need to be administered by a Vet. (not applicable to cats)
For the latest update go to www.gov.uk/guidance/pet-travel-to-europe
Rabies blood sample alone £119.98
Rabies Blood Sample and Certificate: £145.20
PETS Health Examination and certificate prior to travel: £46.55