With this, it will be convenient to discuss new clause 13—Court to be aware of provision in custody for certain dependent offenders—'It shall be the duty of the Secretary of State to make available to any court passing a custodial sentence upon any offender whom the court believes to be dependent on drugs or alcohol an assessment of the provision available in any prison or other custodial institution to which the offender is liable to be committed of facilities for providing treatment appropriate to his condition.'.