Alex doesn't survive - the final scene is a Dying Dream
- None of the cops shuffling around seem at all concerned with giving first aid to the guy impaled to the floor, or with calling for an ambulance. In fact, no-one pays him any attention at all, and even when he greets the inspector he gets no response. Not that it's likely for someone to survive being impaled for a couple of hours anyway.
Alex is Mark Renton
- This theory springs mostly from that one crappy review of Trainspotting that I read, that called Mark Renton Alex by mistake, but...well, if Keith Allen's Hugo is, in fact, the dealer in Trainspotting, I see no reason why Alex Law can't be Mark Renton, post-reform claim at the end of the film.
- Of course, the making of T2 Trainspotting kind of blows that theory to hell.