So my cat has been happily coming and going using his cat flap since my initial worry about him disappearing for a short time 
Today he comes running in miaowing as if he is trying to tell me something dives on me and snuggles on my lap and lies there happily purring for 30 mins.
He has never done this was lovely just wish I knew what he was trying to tell me. I suspect he has seen another cat and got a fright or maybe he was just a bit cold.