I'm researching "free go" and as I understand it Circular 05/1989 gave loose guidelines for what changes were eligible, including change in number of units. But then Circular 31/1992 tightened them up to only minor changes. Then I understand Circular 04/2008 reverted to the test set out in regulation 8 and Circular 05/1989, referring to development of the same character or description as the earlier proposal. I can't find an electronic copy of Circular 05/1989 - I need to see if it did say anything about changes in number of units, i.e. how it interpreted "development of the same character or description". I would argue if "residential development" is what it is, then the numbers of units do not matter, unless you change e.g. from houses to flats.
