Well, the plastic bowls are now confined to the cupboard and I have donated a pile of old plates to cat use only. I have tried various dietary things and come to the conclusion that this is probably not a factor. I went back to various single sources of protein in turn - but either my 2 other cats liked it and Polly did not or vice versa. Now I give tuna in the morning and James Wellbeloved hypo allergenic for the rest of the day. I also have been using the Science Plan (or is is Science Diet?) sensitive skin dry food. I have no evidence that any of these do any good and my other cats long for Whiskas.

I will hunt down the 'butchers' food.