Devon’s Pet’s Vaccinations are the Most Unaffordable in the South East of England Annual Dog Booster Vaccinations In South East England According to our survey of 165 vets, the average cost in Britain for annual cat booster vaccinations is £49.60. As seen below, Devon's dog boosters vaccinations are equivalent to 11.2% of the average weekly salary. County Average Weekly Salary Primary Vaccinations* Booster... Read more