Considering the large expenditure already incurred upon the existing Public Offices of the locality, the authors of this plan are induced, upon economical as well as upon practical grounds, to recommend that the Board of Trade and Treasury Chambers towards St. James’s Park, the Horse Guards, and the Admiralty should be retained, and, with certain external modifications, be made to group with and form part of a scheme _for concentrating the whole of the public offices in one connected mass of building_ between the Park and Whitehall, which suggestion they believe may be carried out in a most convenient and striking manner. Owing to the lowness of the site, which is less than two feet above the highest known tides, great loftiness of structure is proposed, and all habitable accommodation in the basement is deprecated. A great dome over the main entrance of the Public Offices is suggested, in order that they may vie in importance with the Abbey and new Legislative Palace, and have a distinctive character, both as a feature of Westminster, and also as seen from a distance. To allow of a comparison being formed between these offices and other existing and proposed buildings of the district, a reference is solicited to the illustrations of the block plan, where all such buildings are shown truly upon one scale, in their relative positions, and on their true levels. It is proposed that the principal carriage and foot entrance to the Public Offices should be from Whitehall, into a grand hall 320 feet long and 150 feet wide, covered with a glass roof, and affording access by archways to the several courts of the edifice. Upon the occasion of great receptions and other gatherings the great hall would afford ample accommodation for all carriages in attendance, and might be found useful occasionally for other public purposes, when a large and well-lighted covered area might be required. The magnitude and arrangement of the main building are such as to afford ample accommodation for all the offices enumerated in the official instructions, with the exception of the Admiralty, for which it is proposed to have the additional quota of accommodation provided for towards the Parade, where also, as well as on each side of the Horse Guards, is provided accommodation for other public purposes which may hereafter be required. The boundary of the Public Offices towards the Park is so arranged as to increase its present area.