I don't believe he is still in the area he was last seen I was just covering all avenues.
I don't really get why, after waking up, he remained in the doorway for any length of time. I'd think he'd want to get out of there pretty sharpish and get home.
He must have been feeling rubbish by that point. Hangover creeping in, cold, drowsy and the thought of that walk home. Also, i'd think he'd be feeling pretty dehydrated and in search of water. So if he did leave that area undetected by CCTV I can imagine him taking a route that went past a 24 hour garage or similar where he could get a drink.
I don't believe he arranged to meet anyone as per post on the previous page (sorry can't remember who wrote it) about the timings.
I'm surprised that there weren't a few stragglers from the nightclub in the same area as him. Maybe there were and they went undetected too.
I don't know about the bike theory. Corrie's mum said they're covering all possibilities. If there was a bike that had gone missing from the area I think they'd be putting more emphasis on that.
Going to take a closer look at the maps.
Where are you Corrie?