The proposed development, involving no affordable housing, is clearly in conflict with Policy 3A.11 of The London Plan. However, this needs to be balanced with policies that seek to preserve and enhance the character and appearance of heritage assets.
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Concerning car parking, the site has reasonable access to public transport. There is no scope to provide any more that the proposed 2 car parking spaces and any additional pressure for on-street parking has to be balanced with the benefits of bringing the building back into use.
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Overall, I conclude that the benefits of the development outweigh the identified harm. The scheme would enhance the character and appearance of the Conservation Area and bring the building back into beneficial use. This would outweigh the harm and I allow the appeal.