It makes one wonder if the couple supposedly seen outside 37SR were a clever piece of misdirection.
There are no reported signs of SJL having been inside, eg fingerprints. She could not have avoided leaving fingerprints inside if she really had conducted a viewing. They would be on door handles, light switches, banister rails, worktops, and so on. If there were loads but we just don't know about it, certainly the CPS at least would have been told. The CPS, however, have said there is no evidence linking SJL to JC. They wouldn't have said this if there were her and his fingerprints inside 37SR. I infer there are not and hence neither of them was ever there.
So the hunt should have ignored 37SR from the outset, because it's clear by deduction that she was never there. But if you sent a couple of accomplices to turn up and get noticed there, you may persuade a suggestible investigations team that she really did go there. If you do that, and they release that assertion into the public domain, that becomes the narrative - and it still is to this day. Meanwhile, nobody who saw anything weird happening several miles away is going to speak up because they've already been told where she last was and it's not in (eg) Acton or Chelsea.
OK it's a bit of a conspiracy theory, but for someone to disappear essentially without trace, there really does seem to have been some sort of conspiracy.
We are in the position of knowing what happened and the media coverage that followed.
However, if you look at this from the perpetrator viewpoint, how is he to envisage that this amount of attention would follow.
On the 28th July 1986 Suzy Lamplugh was just an estate agent employed by Sturgis.
People go missing all the time, but don’t get this level of attention.
IMO based on what we know, two people, one blonde and a male were waiting for Suzy at 37 Shorrolds Road.
They are the couple that the various witnesses saw, not Suzy, she never got as far as Shorrolds Road.
The only facts we have in this case is that Suzy left the Sturgis office at lunchtime and was never seen again.
As the office did not have a clock we can’t even be sure exactly what time she left.
Her car being found in Stevenage Road at 10.03pm is the only other factual evidence.
Again IMO the way this vital piece of evidence was treated is criminal, it should have been preserved.
Any narrative we look at needs to be based on these two facts, as they are the only concrete things we know for sure.