It would then work as you outline, but is there much precedent for two abductors working together in this way?
I mean sure, if you look at gangland hits and whatnot, there are quite likely several people involved. But there's no evidence SJL was involved in anything shady of that ilk. The stuff that occasionally comes up about mortgage frauds originated with DL, and was based on nothing. Kidnapping could involve several people but there was never a ransom demand and the Lamplughs weren't rich anyway.
If we rule out involvement in crime, on the basis there's zero evidence, then the two abductors would have to be sex attackers. Are joint sex attackers actually a thing? If I were a criminal of any sort, my concern about involving anyone else would be the
Prisoner's Dilemma issue: he might one day get caught for something else and dob
me in.
You can tell from how he's quoted that "Albert Clyne" is being transcribed verbatim (CV likewise). That's what he actually said. They re-eliminated the original suspects according to whether they 1/ were in Fulham that day and 2/ knew SJL. That left only Cannan, therefore he did it. That's the "case".
We know the 1986 inquiry did not look at recently-released sex offenders. Had they done so they'd have had a list, by my
Fermi estimate, of about 30 of them: violent offenders against women. Even if it's not 30, it's not 0 either. If the circumstantial evidence that points to JC also points to any of those, then that's the end of the "case" against JC. This, I would guess, is what the police have had pointed out to them by the CPS. It's not good enough that circumstantial evidence fits JC; it has to not fit anyone else,
and you have to put him in Fulham.
They did not eliminate anyone at pubs in Putney, nor search pubs in Putney (if they had they could have disarmed DV by simply saying so).