Appendix 1  The selection of prisons in our study

Information regarding the twenty-one prisons chosen for this study is presented in Table 1 overleaf. The prisons selected were the seven operational PFI prisons, the two privately managed prisons and 12 public sector prisons which between them provided the best comparators to the nine private sector prisons. In choosing the 12 public sector comparators, we took into consideration the category of the core prison, whether or not they had Category A prisoners, the size of the prison population and any other special factors. To aid us in this decision-making process, we consulted the PFI contracts, looked at recent work by the Prison Service on costs which identified comparator prisons, and finally, consulted with our reference panel. As a result, Table 2 overleaf shows how we matched the public and the private sector prisons for our 2002 study.

It is important to bear in mind that the prisons chosen for this study were not drawn randomly from the prison estate; hence we take care to avoid using in our report the potentially misleading term 'sample'. In particular, with reference to our traffic light matrix, we emphasise that the rating of performance is relative to those prisons in our study and therefore not necessarily an absolute case with regards to the prison estate i.e. Lancaster Farms, Swansea and Parc are rated joint top in our traffic light matrix but this does not necessarily mean that they are the best prisons in the prison estate.

Table 1: Information on the prisons chosen for our study

Management type

Prison

Year of opening

Average population 2001/02

Core type

Category A security

Special factors

 

 

 

 

 

 

 

PFI prison

Altcourse

1997

850

male local

yes

 

PFI prison

Ashfield

1999

377

closed YOI

n/a

juvenile:YOI 75:25

Public

Brinsford

1991

451

closed YOI

n/a

juvenile:YOI 50:50

Public

Bullingdon

1992

933

Category B (trainer)

no

 

Public

Chelmsford

1830

501

male local

no

 

Privately managed

Doncaster

1994

1084

male local

yes

 

PFI prison

Dovegate

2001

500*

Category B (trainer)

no

therapeutic community restrictions

PFI prison

Forest Bank

2000

1040

male local

no

takes Young Offenders

Public

Garth

1988

613

Category B (trainer)

no

 

Public

Grendon

1962

231

therapeutic community

no

takes those who are committed to therapeutic environment.

Public

High Down

1992

714

male local

yes

 

Public

Lancaster Farms

1993

499

closed YOI

no

juvenile:YOI 40:60

Public

Lewes

1853

500

male local

no

no YOs since March 2002

PFI prison

Lowdham Grange

1998

495

Category B (trainer)

no

 

Public SLA

Manchester

1868

(rebuilt in 1990)

1246

male local

yes

 

PFI prison

Parc

1997

920

male local

no

takes juveniles

Public

Pentonville

1842

1175

male local

no

 

PFI prison

Rye Hill

2001

591

Category B (trainer)

no

emphasis on rehabilitative programmes

Public

Swaleside

1988

752

Category B (trainer)

no

 

Public

Swansea

1861

260

male locsal

no

 

Privately managed

The Wolds

1992

405

Category C

no

 

NOTE

*  Dovegate was not operational for the full year in 2001/02. 

Source: National Audit Office

Table 2: How the public sector prisons are used as comparators to the private sector prisons

Prison

Altcourse

Ashfield

Dovegate

Forest Bank

Lowdham Grange

Parc

Rye Hill

High Down

YES

 

 

 

 

 

 

Brinsford

 

YES

 

 

 

 

 

Lancaster Farms

 

yes

 

 

 

 

 

Garth 

 

 

yes

 

yes

 

yes

Grendon

 

 

YES*

 

 

 

 

Swaleside

 

 

yes

 

yes

 

YES

Chelmsford

 

 

 

yes

 

yes

 

Manchester (SLA)

yes

 

 

 

 

 

 

Swansea

 

 

 

 

 

yes

 

Pentonville

 

 

 

YES

 

yes

 

Bullingdon 

 

 

 

 

 

 

yes

Lewes

 

 

 

yes

 

yes

 


Capitals:

Best comparator (if possible to decide)

Lower case:

Also a good comparator

*Grendon acts as best comparator with Dovegate's therapy centre

  Public sector prison

  PFI Prison

Source: National Audit Office