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This page is retired and the dataset is archived as of September 2020. Version 2 of this dataset can be found Impact Bond Dataset.

Location: Peterborough, United Kingdom

Date outcome contract signed (launch date): 2010

Duration: 84 months

Capital raised: total investment amount committed: £5,000,000

Intermediary or advisor(s): Social Finance

Policy area: Criminal justice

Outcome payers: Ministry of Justice (Central government), The National Lottery Community Fund

Service Provider(s): St. Giles Trust (charity number: 801355), Ormiston Children and Families Trust (charity number: 1015716), YMCA (charity number: 212810), SOVA (charity number: 1073877)

Investor(s): Barrow Cadbury Charitable Trust, Esmée Fairbairn Foundation, Friends Provident Foundation, The Henry Smith Charity, Johansson Family Foundation, Lankelly Chase Foundation, The Monument Trust, Panaphur Charitable Trust, The Tudor Trust, Paul Hamlyn Foundation

Advisor: Social Finance

Impact bond structure: Managed

Target population: Adult males (aged 18 or over) who received custodial sentences of less than 12 months and who had been discharged from HMP Peterborough

Size of cohort: 1802

Outcome validation method: Quasi-experimental

Stage: Completed

Intervention description

The Peterborough SIB is intended to reduce the reconviction rates of short-sentence male prisoners leaving HMP Peterborough. The One Service contracted four organisations, St. Giles Trust, Ormiston Children and Families Trust, YMCA and SOVA, to deliver its core activities. St. Giles Trust and Ormiston Children and Families Trust focus on the immediate needs of an o ender and his family before and after he is released from prison. These needs include accommodation, medical services, family support, employment and training, bene ts and  nancial advice.Participants voluntarily refer themselves into 'The One Service'. St Giles Trust workers interviewed offenders to assess their needs. supported offenders before release, at the point of release, and into the community. The Ormiston Children and Families Trust supported offender's children and families in that time. SOVA and YMCA provided longer-term, lower-intensity support. 

Approach to Specifying Intervention

Black box approach: Social Finance were to be accountable for the reoffending rates of offenders subject to the intervention they prescribed, but the intervention was not specified by the Ministry of Justice. 


Reduced reoffending (1)

  • Definition: A 10% reduction in the number of reconviction events in any of three cohorts of 1000 prisoners 
  • Baseline: Matched comparison group; evidence of reconviction events held on the police national computer
  • Maximum Payment: N/A
  • Outcome Target (#): N/A
  • Outcomes Achieved: No 

Reduced reoffending (2)

  • Definition: A 7.5% reduction in the number of reconviction events across all three cohorts of 1000 prisoners
  • Baseline: Matched comparison group; evidence of reconviction events held on the police national computer
  • Maximum Payment: N/A
  • Outcome Target (#): N/A
  • Outcomes Achieved: Yes

Further information

  • Date Outcome Contract Signed: March 2010
  • Date service delivery started: September 2010
  • Target Service Users Actively Engaged: 3000
  • Actual Service Users Actively Engaged: 1802

More detailed information on this project can be found in the Data Template Excel sheet linked below, with a full list of sources. All fields are defined according to our data dictionary. 

This template was completed by Reform, the leading independent think tank for public service reform.