Table 1 GP Practice and Patient Eligibility Criteria

GP Practices (clusters)

Situated in South London, UK

Risk of closure

The lead GP or other authorised individual provided consent for the GP practice to take part in the study

At least 50% of GPs within the GP practice were interested in completing the training workshop

Patients

A PPS diagnosis

Active psychosis

≥18 years old, ≤65 years old

Drug or alcohol addiction

Registered within a GP practice in South London that has consented to taking part in PRINCE Primary

Benzodiazepine use exceeding 10 mg per day

Had 6 or more consultations in the last year (not necessarily for the same symptom or directly related to PPS)

Had any psychotherapy treatment within the last year for their PPS

Ability to give written informed consent

Dissociative seizures^a

Provided baseline data

Imminent risk of self-harm

Speak and read English at an adequate level

Taking part in PRINCE Secondary (NCT02426788) or the ACTIB study (ISRCTN44427879)