Table 1 Inclusion and exclusion criteria

1. Young people aged 12 years 0 months to 17 years 11 months (exclude if 18 at randomization)

2. Young people who can consent* and who are being considered for in-patient psychiatric admission or ICCS in the participating NHS Trusts.

* Eligible participants under 16 years of age will require the consent of at least one person with parental responsibility

1. Local ICCS or TAU teams unable to accept new referrals due to their full capacity being reached.

2. Young people unable to consent due to their mental state.

3. The young person’s risk profile is incompatible with ensuring their safety and/or the safety of others in the community, as indicated by a Children’s Global Assessment Scale (CGAS) score of < 20