Thanks boys, he should be on his way home now. I had trouble getting through to the hospital this morning as they'd had an emergency so no-one to answer the phone in the dept: they'd put him. The doctor was with him doing some tests when I did speak to someone. When I phoned again later they weren't really happy as his blood sugars were still higher than they should be and they said it was possible he'd be in for the weekend.
Got a phone call from John a bit later and he said to send in the cavalry he could come home, it would probably be about 5.30 pm when he would be ready by the time they's sorted out the paper work and his medication, they'd pumped him full of drugs and were pleased with him.