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National Back Office for the Personal Demographics Service

The National Back Office (NBO) provides a national data quality service. It's responsible for the management of NHS Numbers and PDS records, investigation and resolution of data quality incidents on Personal Demographics Service (PDS) demographic records, and the provision of a Tracing Service to approved organisations.

Contacting the NBO
Find National Back Office contact details 

Data Quality incidents
Find out about data quality incidents and how they're dealt with 

What we do

We're responsible for the: 

  • management of NHS Numbers and PDS records
  • investigation and resolution of data quality incidents on PDS demographic records
  • provision of a Tracing Service to approved organisations

Information sharing

Read the memorandum of understanding (MOU) on processing information requests from the Home Office to NHS Digital for tracing immigration offenders.


Tracing Service review

A review to assess the appropriateness, effectiveness and operational efficiency of our tracing services was undertaken during 2015 and 2016.  The review was published in November 2017.


Fair processing

The Personal Demographics Service (PDS) is the national electronic database of NHS patient details such as name, address, date of birth and NHS Number (known as demographic information). More information about how this information is used can be found in the PDS fair processing statement.


Also in this section

Contact the Personal Demographics Service (PDS) National Back Office (NBO)

Find out how to get in touch with the Personal Demographics Service (PDS) National Back Office (NBO).

Data quality incidents

The Personal Demographic Service (PDS) National Back Office (NBO) can update incorrect data items on the PDS.

Management of NHS Numbers and PDS Records

The Personal Demographics Service (PDS) National Back Office (NBO) has responsibility for the management of NHS Numbers and PDS records.

National Back Office Tracing Service

The Personal Demographics Service (PDS) National Back Office (NBO) provide a Tracing Service under specific legislation to a range of NHS and non-NHS bodies.

Demographics Batch Service Bureau

The Personal Demographics Service (PDS) National Back Office (NBO) manages the Demographics Batch Service Bureau (DBSB). It provides a mechanism for non-PDS compliant organisations to perform batch tracing of demographic records against PDS.

National Back Office Tracing Service review

Review to assess the appropriateness, effectiveness and operational efficiency of tracing services carried out by NHS Digital.

Personal Demographics Service fair processing

The Personal Demographics Service (PDS) is the national electronic database of NHS patient details such as name, address, date of birth and NHS Number (known as demographic information).

Have a question? Call us on 0300 303 5678 or contact enquiries@nhsdigital.nhs.uk.

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