were can i by incurin tablets without going to vets as charge to much as i am a
a pensioner

You could look at http://www.petdrugsquick.co.uk. I've not used them but looking through their prices they are a bit cheaper than my vet for things like Frontline but are more expensive for antibiotics with a human equivalent like amoxycillin. It just depends what your vet charges for Incurin. Remember too that your vet can charge for writing the prescription you will need.