Once an asset is disposed of, the amount which is received by or which accrues to the seller of the asset constitutes the proceeds from the disposal.
 
Assets disposed of by donation, for a consideration not measurable in money, or to a connected person at a non-arm’s-length price are treated as being disposed of for an amount received or accrued equal to the market value of the asset. Amounts included in income such as a recoupment of capital allowances are excluded from proceeds.