When I draw the sitting room curtains at 6am, there sits Spirit on the bench. I put my hand on the window and he puts one paw up against the pane where my hand is. It's like a cat version of a 'high five'!

I let him come inside (just in the hall) and he has his snack on the mat. The other two are plastered up against the radiator behind the TV in their new bed (very soft and comfy - they love it!) so there's no trouble. They're shut in the kitchen all night and can't wait to get to the sitting room.
Murphy is up and down health-wise. He seems to have put on a tiny bit of weight, and he's eating, drinking and using the litter tray as normal. We've decided to wait before having him put to sleep, he's not in any pain and cuddles on my lap in the evenings (much to SmokeyPokey's disgust) We're monitoring the situation.