The proposed development would be of a scale that would not be consistent with the prevailing height and form of neighbouring properties and the street scene at this part of Grosvenor Road and Cable Road where the overall and predominant character of properties is 2-storey.  The additional storey proposed would not relate well to its immediate surroundings with regard to the proposed form of development which, by reason of the width of Grosvenor Road and the relationship of residential properties at the junction of Cable Road with Grosvenor Road, would result in an overbearing and unacceptably dominant impact that would result in a detrimental change in the character of this part of Grosvenor Road.  Furthermore, having regard to the close proximity of Nos 3 & 5 Cable Road with the development proposed, the additional storey would result in an unsatisfactory and undesirable impact on the amenities of the occupiers of those properties.  The proposed development would therefore be contrary to Policy HS4 (Criteria for New Housing Development) and Supplementary Planning Document 2 (Designing for Self-Contained Flat Developments and Conversions) and the provisions of Paragraph 118 (e) of the National Planning Policy Framework.