Lazarus - DEFRA reviewd the mapping process once it was over. One of the comments they made was about the inconsistencies, caused by different parcels being mapped by different teams to different standards (at least that's what I think they mean, see quote). Maybe that's why Eldon was excluded but GG was included? But we dont really know
and
the Agency mapped open country on a parcel basis, using the Ordnance Survey Mastermap (TM) product to identify where the boundaries are, which are the most appropriate etc. Whilst this method of mapping has worked, in that the mapping work has been completed, it has resulted in a scattering of open country across southern England, and around the margins of the core areas of the northern uplands. At the beginning of any future mapping process that focuses on specific areas of land, and which involves multiple parties, it is vital that a consistent, transparent and understandable means of boundary selection is agreed.
and
A consistent and robust method of identifying boundaries of any mapped areas needs to be devised. Mapping at a landscape level rather than a parcel level would require some substantial changes to the mapping process (boundary selection would take on a
very different meaning) A detailed examination of the benefits and problems of such an approach is needed.