These NICE Pathways have been published at http://pathways.nice.org.uk
There are references to various systemic therapies, including in the Costing report:
In the category of working with vulnerable and disadvantaged young people, there are references to family-based interventions and ‘intensive interventions (such as family therapy) for those who need it’.
And for promoting abstinence and preventing relapse for 10-17 year olds, this is mentioned:
Offer multicomponent programmes (such as multidimensional family therapy, brief strategic family therapy, functional family therapy or multisystemic therapy; see delivering psychosocial interventions for children and young people) for those with significant comorbidities and/or limited social support.
For adults with moderate or severe dependence and successful withdrawal – is there is a regular partner who would like to be involved – behavioural couples therapy.
Interestingly the other new topic does not cover the same details, although the significance of family involvements is recognised: Social and emotional wellbeing for children and young people.
The costing reports talks of the need to employ staff for this and consider the renting of rooms for this – as the focus is on school-based interventions.