I want to concentrate this post on one of the topics in the survey: whether there should be an Upper Layer of SOAs, or a layer in any future geography that contains 25,000 - 40,000 people.
I've picked up on a potential area of confusion here from early survey responses. Some of you have pointed out that you can create your own customised areas from the layers below. This is true. But you can only aggregate the data that's already available to you.
The benefit of having an 'Upper Layer' is that it may enable the release of data that you can't currently get for areas smaller than local authority districts. I'm thinking about Neighbourhood Statistics now, not the Census. Data that is too low incidence, or potentially too disclosive to release for Lower or Middle Layer SOAs, or wards, or any other small area geography. Datasets related to topics like illness and mortality, or ethnicity etc.