When buying Pet Insurance, do take time to read the policy and find out what is covered (e.g. vet bills, accidental death, theft, holiday cancellations) - also make sure you have unlimited claims in the event your cat or dog needs more than one dose of treatment in it's lifetime.
Get more than one quote if possible! Prices do vary, so shop around.
Ask your friends! Find out who they recommend and who they don't!
Compare quotes with your current policy - make sure you're getting a better deal.
Use the same insurer - you may get discounts if you already have a policy with them.
Increase your excess. A higher excess will mean lower premiums.
Pay for the cover that you need.