s 21 Buildings
(1) For the purposes of this Act, expenditure on the provision of plant or machinery does not include expenditure on the provision of a building. (2) The provision of a building includes its construction or acquisition. (3) In this section, “ building ” includes an asset which— (a) is incorporated in the building, (b) although not incorporated in the building (whether because the asset is moveable or for any other reason), is in the building and is of a kind normally incorporated in a building, or (c) is in, or connected with, the building and is in list A. Assets treated as buildings (4) This section is subject to section 23 (but any reference in list C in subsection (4) of that section to “ plant ” does not include anything where expenditure on its provision is excluded by this section) .