Nicholaus, you are right, Morley was the PO (May still be?) and the one who Otto sued, I was not in the hall long enough to make a judgement on how he ran things, though I know lesterkite was not a fan.
The story when I was there was that a lot of people were moving out the Congregation due to JWs finding it difficult to afford housing in the area, which I find somewhat plausible (Wimbledon is expensive and JWs don't tend to have a lot of money of course) though perhaps it was a combination of things. Again, Lester might know more.