After a thorough examination it was agreed that the next step for the old chap would be x-rays and blood tests. As well as not wanting to walk far, Sir H has been getting very out of breath and pants for ages even after a short walk.
So, on Friday morning, I'll drop Sir H off at the veterinary hospitabl first thing and he'll stay there for the day for his tests to be done.
Hopefully we'll be able to find out more and then get advice as to the next steps to take.
Wiggle, meanwhile, is his usual happy self although I'm sure he'll miss Sir H for the day on Friday but I'll keep him busy until its time to collect Sir H.