TSEM8605 - Trust management expenses: mixed trusts: general
A mixed trust is one where there are distinct parts of the trust fund so that the income may be taxable on more than one basis (TSEM1115). Allowable TMEs are set against each part of the income as appropriate on a proportionate basis.
TSEM8610 explains the TMEs position in trusts that are part accumulation/discretionary and part IIP.
TSEM8615 explains the TMEs position in trusts that are part settlor-interested and part non-settlor-interested.