However, I am lead to believe, from a Planning Lawyer, that these regulations have been superceded and do NOT cover landing and taking off from a venue that is not a private dwelling e.g. a hotel. Equally, I am told, the 28 day rule does not apply if its within the curtilage of a such a property - again, because it is NOT a private dwelling.
I'd start by asking the planning lawyer to supply written documentation to support his belief.