That's a lot to go on with. Many,many thanks oh lovely, kind cat people! I googled until I was blue in the face trying to find wet food. Those American felines have a lot more choice, don't they. Am I wrong in thinking that it isn't allowed to ship in cat food from America?
That link for wet RC food (I thought they only did dry) is also very helpful. Pouches of beef or chicken are definitely worth a try. The only problem is gravy makes him whoops as it's too rich. Millys Mum you are a lot better at navigating zooplus than I am - spent ages on that site too. I'll see if I can get small samples of them.
A friend in France has volunteered to send me 2 cans of their liver prescription diet which says the magic word boeuf. I hope they arrive in usable condition - they don't do weekends so will be frozen in a depot until Monday (does that matter with canned food? I am getting manic with worry as these are crucial 'trial cans'). The good news on that is that if it doesn't make him sick, I can order up to 25 trays of it through my ex vet there!! The bad news is the delivery cost, but as you all know, when it comes to the furry ones, money just has to be found.
Hope 2 is enough to do the test.....or I will have a lot of unwanted grub
Otherwise I will have to reconcile myself to an alternative and possible vomiting every day. What do your vets say? Mine insists that after any vomiting, even regurg, no food for at least 6 hours. Sometimes the boys are hungry and I lower that to 5 (and small amounts). With liver disease, you have a target to reach every day of food eaten. If it's the odd day with a vomit, that's ok, but if it's every day he could end up getting less than 1/4 can a day.
Fingers and paws crossed and thank you all.