They would be accessed from a published phone number and would be answered by a triage AI which would have a repertoire of prompts designed to elicit appropriate replies to indicate the appropriate outcome.

The decision tree might look like this:

Is this a “999” situation? Yes- alert emergency services and ask for location

No |

Is this a a potential suicide? Yes- further prompts, if confirmed: appropriate referral.

No |

Establish identity (NHS number or NI number?) Not given- no further response

Given |

Should this be referred to GP? Yes- establish surgery, further prompts to elicit relevant details, input to appointment system if possible

No |

Is health advice being asked for? No- invite continuing when they feel like it.

Yes |

Provide it.

After an interval of a few hours, days, weeks or years of no inputs, as appropriate, a “do you want to continue?” prompt. Yes- no invite caller to continuing when they feel like it.

No- delete conversation