thanks - he is the happiest flirt of a cat i have ever met - even when we take him to the vets, he purrs so much, i think he is going to combust! I am going to get some more advice on having to feed him the prescription food as he doesnt really like it and has lost 1kg!
Before that, we gave them both coley and white fish which they adore! it doesnt have to be expensive either.
good luck as well - i hope you find some food that does the job
