Tiny does have an allergy to dust mites and food storage mites.
No he does not have mites
The epilepetic drugs made no difference so the vet weaned him off them, he didn't mention liver shunt
No xrays - can't afford it. Have spent over £700 so far for no gain.
Yes, 2 separate vets witnessed the head throwing and I video'd it for them as well. They asked colleagues who mainly suggested epilepsy. No have not tried training, not sure what sort to try.
Hope this clarifies the problem. I have mentioned Tiny's problem to everyone I can think of and have come up with nothing apart from the Yorkie rehousing lady's suggestion that it is in his head.
PS I will wait for however long it take you to find an answer for me