I am sorry to hear of Alasdair Porter’s passing away.  I had contact with him for many years when he came to talk to Final Year Veterinary Students at both the Royal Veterinary College and then at the School of Veterinary Science in Liverpool.  He was always interested in the students and they came to value what he had to say and the advice he had to give.  The veterinary profession has lost a good friend and ally.  My condolences to his family.  John Cox