(1) Subject to this section, no chargeable gain shall accrue on the disposal of or of an interest in an asset which is tangible movable property and a wasting asset.
(2) Subsection (1) shall not apply to a disposal of or of an interest in an asset where -
(a) subject to subsection (5), from the beginning of the period of ownership of the person making the disposal to the time when the disposal is made, the asset has been used and used solely for the purposes of a trade or profession and that person has claimed or could have claimed any capital allowance in respect of any expenditure attributable to the asset or interest under paragraph (a) or (b) of section 552(1), or
(b) the person making the disposal has incurred any expenditure on the asset or interest which has otherwise qualified in full for any capital allowance.
(3) In the case of the disposal of or of an interest in an asset which, in the period of ownership of the person making the disposal, has been used partly for the purpos
…