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Legacy Systems

Any new digital service will, to a greater or lesser degree, need to integrate with one or more of our legacy services. Usually, although not always, this will take the form of reading data from a legacy services’ API, and emitting a domain event that can be consumed by a legacy service.

On this page you’ll find a rundown of the four main legacy systems and who to speak to start your journey with integrating with them.

NOMIS (Prisons)

National Offender Management Information System (NOMIS) is the current authority system for information management and administrations of HMPPS Prisons. Developed by Syscon, it was originally deployed into HMPPS xx years ago but is suffering from a number of constrains typical for a system of this age:

As such a programme of work is underway to replace NOMIS with a new suite of digital solutions.

Delius (Probation)

Delius (also known as NDelius for National Delius) is the main case/person management system used by Probation Practitioners to manage people on probation (community licenses).

Delius product team pages (requires Confluence account)

Getting the data

There are a number of APIs that can be used to access data stored in NDelius, but it is recommended that in the first instance you post a message in #probation-integration-tech

Environments

  • Dev (aka Test): https://ndelius.test.probation.service.justice.gov.uk

Contains synthetic data and requires no special clearance (other than standard HMPPS controls). Not connected to any OASys environments.

  • PreProd: https://ndelius.preprod.probation.service.justice.gov.uk

PreProd contains data copied directly from Prod - this is usually refreshed monthly. As such Security Clearance is required to access PreProd. In PreProd, OASys and NDelius exchange Offender and Assessment data via NDH.

  • Prod: https://ndelius.probation.service.justice.gov.uk

Prod contains live data, as such Security Clearance is required. It is highly unusual for anyone other than frontline staff to need access to Prod. In Prod, OASys and NDelius exchange Offender and Assessment data via NDH.

PPUD (Probation and Prison)

Public Protection Unit Database (PPUD) is used for various Public Protection purposes, including managing parole, managing recalls, managing mental health transfers and managing serious complaints and incidents.

It is developed and supported by Lumen. See PPUD

for some useful context.

Getting the data

There is currently no API available to enable integrations with PPUD. In the first instance contact the #hmpps-technical-architecture channel.

Environments

  • Dev (known as dev/test): https://internaltest.ppud.justice.gov.uk

Contains synthetic data and requires no special clearance (other than standard HMPPS controls).

  • PreProd (known as UAT): https://uat.ppud.justice.gov.uk

UAT contains data copied and pseudo-anonymised from Prod - this is usually refreshed ¾ times each year. As such Security Clearance is required to access UAT or Prod.

  • Prod: https://www.ppud.justice.gov.uk

Prod contains live data, as such Security Clearance is required. It is highly unusual for anyone other than frontline staff to need access to Prod.

OASys (Probation and Prison)

Offender Assessment System (OASys) which manages most of the risk assessments and sentence plans across both the Probation and Prison Services.

OASys is a Oracle APEX application hosted in MoJ’s Azure fix-n-go environment.

Also see the Assess Risks and Needs project.

Getting the data

There are a number of APIs that can be used to access data stored in OASys, but it is recommended that in the first instance you post a message in #probation-integration-tech

Environments

  • Dev (known as t1): https://ords.t1.oasys.service.justice.gov.uk

Contains synthetic data and requires no special clearance (other than standard HMPPS controls). Not connected to any NDelius environments.

  • PreProd : https://pp-oasys.az.justice.gov.uk

PreProd contains data copied from Prod - this is usually refreshed on a weekly basis (on Sunday evenings). As such Security Clearance is required to access PreProd.

  • Prod : https://oasys.az.justice.gov.uk

Prod contains live data, as such Security Clearance is required. It is highly unusual for anyone other than frontline staff to need access to Prod. In Prod, OASys and NDelius exchange Offender and Assessment data via NDH.

There are also additional environments, T2, Training and Practice that are used, but can be ignored for most purposes.

NDH (Prison and Probation)

Not a user-facing service, but a legacy component that exchanges data between NOMIS, NDelius and OASys. You’re unlikely to need to know too much about this, but it may be good to know of its existence, especially if you’re looking to integrate with multiple legacy services.

New digital services will use Domain Events and APIs to facilitate data exchanges between systems.

Also see the Assess Risks and Needs (requires Confluence account) project.