| Adel Beck Secure Children's Home | Young offender institution | Leeds | +44-113-261003 | — |
| Aldine House Secure Children's Centre | Young offender institution | Sheffield | +44-114-262-1160 | — |
| Atkinson Secure Children's Home | Young offender institution | Devon | +44-1392-388380 | — |
| Aycliffe Secure Services | Young offender institution | County Durham | +44-3002-63000 | — |
| Barton Moss Education Centre | Young offender institution | Salford | +44-161-686-5900 | — |
| Beechfield Secure Children's Home | Young offender institution | Surrey | +44-1342-712309 | — |
| Brook House Immigration Removal Centre | Immigration detention | West Sussex | +44-1293-566500 | — |
| Campsfield House | Immigration detention | Oxfordshire | — | — |
| Cedars | Prison | West Sussex | — | — |
| Clare Lodge | Young offender institution | Peterborough | +44-1733-253246 | — |
| Clayfield House | Young offender institution | Nottinghamshire | +44-115-917-0010 | — |
| Colchester Garrison | Prison | Essex | — | — |
| Colnbrook Immigration Removal CentreWest Drayton | Immigration detention | Hillingdon | +44 20 8283 3850 | — |
| Cookham Wood Young Offender InstitutionKent | Young offender institution | Medway | 01634 202 500 | — |
| Dover Immigration Removal Centre | Immigration detention | Kent | — | — |
| Drake Hall Prison and Young Offender Institution | Young offender institution | Staffordshire | 01785 774250 | — |
| East Suffolk County Hall | Prison | Suffolk | — | — |
| East Sutton Park Prison and Young Offender Institution | Young offender institution | Kent | 01622 785 026 | — |
| Eastwood Park Prison and Young Offender InstitutionWotton-under-Edge | Young offender institution | South Gloucestershire | 01454 382 323 | — |
| Feltham Young Offender InstitutionMiddlesex | Young offender institution | Hounslow | 020 8844 5000 | — |
| Foston Hall Prison and Young Offender InstitutionDerby | Young offender institution | Derbyshire | 01283 584 300 | 310 |
| Haslar Immigration Removal Centre | Immigration detention | Hampshire | — | — |
| Hassockfield Secure Training CentreConsett | Immigration detention | County Durham | +44-1207-565600 | — |
| HM Prison Albany | Prison | Isle of Wight | — | — |
| HM Prison Altcourse | Prison | Liverpool | +44 151 522 2000 | — |
| HM Prison AshfieldBristol | Prison | South Gloucestershire | +44 117 303 8000 | — |
| HM Prison Askham Grange | Young offender institution | York | 01904 772 026 | — |
| HM Prison Bedford | Prison | Bedford | 01234 373 000 | — |
| HM Prison BelmarshLondon | Prison | Greenwich | 020 8331 4400 | — |
| HM Prison Birmingham | Prison | Birmingham | 0121 598 8364 | — |
| HM Prison Blantyre House | Prison | Kent | +44 1580 213200 | — |
| HM Prison BrinsfordWolverhampton | Young offender institution | Staffordshire | 01902 533 565 | — |
| HM Prison BrixtonLondon | Prison | Lambeth | 07749 389326 | — |
| HM Prison BronzefieldAshford | Young offender institution | Surrey | +44 1784 425690 | — |
| HM Prison Buckley HallLancashire | Prison | Rochdale | 01706 514 304 | — |
| HM Prison BullingdonBicester | Prison | Oxfordshire | 01869 353 176 | — |
| HM Prison Bure | Prison | Norfolk | 01603 326 000 | — |
| HM Prison Castington | Prison | Northumberland | — | — |
| HM Prison Channings WoodNewton Abbot | Prison | Devon | 01803 814 893 | — |
| HM Prison Chelmsford | Young offender institution | Essex | 01245 552 297 | — |
| HM Prison Coldingley | Prison | Surrey | 01483 344 502 | — |
| HM Prison DartmoorPrincetown | Prison | Devon | +44 1822 892000 | — |
| HM Prison DeerboltBarnard Castle | Young offender institution | County Durham | 01833 633 212 | — |
| HM Prison Doncaster | Prison | Doncaster | — | — |
| HM Prison Dovegate | Prison | Staffordshire | +44 1283 829400 | — |
| HM Prison DownviewSurrey | Prison | Sutton | 02081966370 | — |
| HM Prison Durham | Prison | County Durham | 01913 323 695 | — |
| HM Prison ElmleyEastchurch | Prison | Kent | 01795 802 433 | — |
| HM Prison Erlestoke | Prison | Wiltshire | 01380 814 250 | — |
| HM Prison Everthorpe | Prison | East Riding of Yorkshire | — | — |
| HM Prison Exeter | Prison | Devon | 01392 415 650 | — |
| HM Prison FeatherstoneWolverhampton | Prison | Staffordshire | 01902 703 081 | — |
| HM Prison Five WellsWellingborough | Prison | Northamptonshire | +44 1933 718888 | — |
| HM Prison Ford | Open prison | West Sussex | 01903 663 000 | — |
| HM Prison Forest Bank | Prison | Salford | +44 161 925 7000 | — |
| HM Prison FranklandDurham | Prison | County Durham | 0191 376 5048 | — |
| HM Prison Full SuttonYork | Prison | East Riding of Yorkshire | 01759 575 440 | — |
| HM Prison GarthPreston | Prison | Lancashire | 01772 622 129 | — |
| HM Prison Gartree | Prison | Leicestershire | 01858 426 600 | — |
| HM Prison Grendon | Prison | Buckinghamshire | 01296 445 243 | — |
| HM Prison Guys Marsh | Prison | Dorset | 01747 856 452 | — |
| HM Prison HatfieldSouth Yorkshire | Young offender institution | Doncaster | 0808 808 3444 | — |
| HM Prison Haverigg | Prison | Cumbria | 01229 713 000 | — |
| HM Prison Hewell | Prison | Worcestershire | 01527 785 150 | — |
| HM Prison High Down | Young offender institution | Surrey | 020 7147 6360 | — |
| HM Prison Highpoint | Prison | Suffolk | 01440 743 100 | — |
| HM Prison Highpoint South | Prison | Suffolk | — | — |
| HM Prison Hindley | Young offender institution | Wigan | 01942 663 187 | — |
| HM Prison Hollesley Bay | Young offender institution | Suffolk | 01473 724517 | — |
| HM Prison Holme House | Prison | Stockton-on-Tees | 01642 744 355 | — |
| HM Prison Hull | Young offender institution | Kingston upon Hull, City of | 01482 282 200 | — |
| HM Prison HumberEast Yorkshire | Prison | East Riding of Yorkshire | 01430 273 000 | — |
| HM Prison HuntercombeNuffield | Prison | Oxfordshire | 01491 643 132 | — |
| HM Prison IsisThamesmead | Young offender institution | Greenwich | 020 3356 4324 | — |
| HM Prison Isle of Wight | Prison | Isle of Wight | 01983 634 000 | — |
| HM Prison Kirklevington GrangeCleveland | Prison | Stockton-on-Tees | 01642 792 600 | 283 |
| HM Prison Lancaster Farms | Prison | Lancashire | 01524 563 450 | — |
| HM Prison Leeds | Prison | Leeds | 0113 203 2600 | — |
| HM Prison Leicester | Prison | Leicester | 0116 2283 000 | — |
| HM Prison Lewes | Prison | East Sussex | 01273 785 100 | — |
| HM Prison LeyhillGloucester | Prison | South Gloucestershire | 01454 264 039 | — |
| HM Prison Lincoln | Young offender institution | Lincolnshire | 01522 663 000 | — |
| HM Prison Lindholme | Prison | Doncaster | 01302 524 700 | — |
| HM Prison Littlehey | Prison | Cambridgeshire | 01480 335 000 | — |
| HM Prison Liverpool | Prison | Liverpool | 0151 530 4158 | 1,370 |
| HM Prison Long Lartin | Prison | Worcestershire | 01386 295 100 | — |
| HM Prison Lowdham GrangeNottingham | Prison | Nottinghamshire | 01159 669 200 | — |
| HM Prison Maidstone | Prison | Kent | 01622 775 300 | — |
| HM Prison Manchester | Prison | Manchester | 0161 817 5600 | — |
| HM Prison MillsikeYork | Prison | East Riding of Yorkshire | +44 1759 488888 | — |
| HM Prison MoorlandSouth Yorkshire | Young offender institution | Doncaster | 01302 523 000 | — |
| HM Prison New HallWest Yorkshire | Young offender institution | Wakefield | 01924 803 000 | — |
| HM Prison North Sea Camp | Prison | Lincolnshire | 01205 769 300 | — |
| HM Prison Northumberland | Prison | Northumberland | — | — |
| HM Prison Norwich | Young offender institution | Norfolk | 01603 708 600 | — |
| HM Prison Nottingham | Prison | Nottingham | 0115 962 8980 | — |
| HM Prison OakwoodFeatherstone | Prison | Staffordshire | +44 1902 799700 | — |
| HM Prison OnleyBarby | Prison | Northamptonshire | 01788 523615 | — |
| HM Prison ParkhurstNewport | Prison | Isle of Wight | — | — |
| HM Prison PentonvilleLondon | Young offender institution | Islington | 020 7700 0912 | — |
| HM Prison Peterborough | Prison | Peterborough | — | — |
| HM Prison Portland | Young offender institution | Dorset | 01305 715 666 | — |
| HM Prison Preston | Prison | Lancashire | 01772 444 874 | — |
| HM Prison RanbyNottingham | Prison | Nottinghamshire | 01777 862 342 | — |
| HM Prison Risley | Prison | Warrington | 01925 733 063 | — |
| HM Prison Rochester | Young offender institution | Medway | 01634 803 100 | — |
| HM Prison Rye Hill | Prison | Northamptonshire | — | — |
| HM Prison Send | Prison | Surrey | 01483 471 000 | — |
| HM Prison Spring Hill | Prison | Buckinghamshire | 01296 445 243 | — |
| HM Prison Stafford | Prison | Staffordshire | 01785 773 000 | — |
| HM Prison Standford HillEastchurch | Prison | Kent | 01795 884 500 | — |
| HM Prison Stocken | Prison | Rutland | 01780 795 100 | — |
| HM Prison Stoke HeathMarket Drayton | Young offender institution | Shropshire | 01630 636 000 | — |
| HM Prison SudburyAshbourne | Prison | Derbyshire | 01283 584000 | 581 |
| HM Prison SwalesideEastchurch | Prison | Kent | 01795 804123 | — |
| HM Prison Swinfen Hall | Young offender institution | Staffordshire | 01543 484 000 | — |
| HM Prison ThamesideLondon | Prison | Greenwich | +44 20 8317 9777 | — |
| HM Prison The Mount | Prison | Hertfordshire | 01442 836 300 | — |
| HM Prison Thorn Cross | Young offender institution | Warrington | 01925 805 242 | — |
| HM Prison Wakefield | Prison | Wakefield | 01924 612 165 | — |
| HM Prison WandsworthLondon | Prison | Wandsworth | 020 8874 4377 | 1,416 |
| HM Prison Warren Hill | Prison | Suffolk | 01394 633 400 | — |
| HM Prison WaylandGriston | Prison | Norfolk | 01953 804 100 | — |
| HM Prison WealstunWetherby | Prison | Leeds | 01937 444 400 | — |
| HM Prison WetherbyWest Yorkshire | Young offender institution | Leeds | 01937 544 474 | — |
| HM Prison WhattonNottingham | Prison | Nottinghamshire | 01949 803 200 | — |
| HM Prison Whitemoor | Prison | Cambridgeshire | 01354 602 350 | — |
| HM Prison Winchester | Young offender institution | Hampshire | 01962 723 320 | 706 |
| HM Prison Woodhill | Young offender institution | Milton Keynes | 01908 722 000 | — |
| HM Prison Wymott | Prison | Lancashire | 01772 442 000 | — |
| HM Remand Centre | Remand prison | Norfolk | — | — |
| HMP AylesburyBucks | Prison | Buckinghamshire | 01296 444 000 | — |
| HMP Fosse WayWigston | Prison | Leicestershire | +44 116 228 4100 | — |
| HMP Kirkham | Prison | Lancashire | 0800 5280 248 | — |
| HMP The Verne | Prison | Dorset | 01305 825 000 | — |
| HMP Wormwood ScrubsLondon | Prison | Hammersmith and Fulham | 020 8735 0595 | — |
| HMP/YOI Bristol | Prison | Bristol, City of | 0117 924 4866 | 614 |
| Kyloe House | Young offender institution | Northumberland | +44-1670-785900 | — |
| Lansdowne Secure Children’s Home | Young offender institution | East Sussex | +44-1323-466270 | — |
| Lincolnshire Secure Unit | Young offender institution | Lincolnshire | +44-1529-414300 | — |
| Low Newton Prison and Young Offender InstitutionDurham | Young offender institution | County Durham | 0191 376 4189 | — |
| Manchester Short Term Holding Facility | Immigration detention | Manchester | +44-161-509-2015 | — |
| Manston arrivals and processing centre | Immigration detention | Kent | — | — |
| Medway Secure Training CentreRochester | Young offender institution | Medway | +44-1634-823300 | — |
| Military Corrective Training Center | Prison | Essex | — | — |
| Morton Hall Immigration Removal CentreLincoln | Immigration detention | Lincolnshire | 01522 666 700 | — |
| New Prison | Prison | Bath and North East Somerset | — | — |
| Oakhill Secure Training Centre | Young offender institution | Milton Keynes | +44-1908-866062 | — |
| Rainsbrook Secure Training Centre | Young offender institution | Northamptonshire | +44-1788-528800 | — |
| Red Bank secure unit | Young offender institution | St. Helens | — | — |
| Sessions House | Prison | Cheshire East | — | — |
| St. Catherine's Secure Centre | Young offender institution | St. Helens | +44-1744-240240 | — |
| Staffordshire Police Northern Area Custody Facility | Prison | Stoke-on-Trent | — | — |
| Styal Prison and Young Offender InstitutionCheshire | Young offender institution | Cheshire East | 01625 553 000 | — |
| Swanwick Lodge | Young offender institution | Hampshire | +44-1489-581913 | — |
| Tinsley House Immigration Removal Centre | Immigration detention | West Sussex | +44-1293-434800 | — |
| Vernon Gate | Prison | Derby | — | — |
| Vinney Green Secure UnitBristol | Young offender institution | South Gloucestershire | +44-117-970-2286 | — |
| Werrington Young Offender InstitutionStoke-On-Trent | Young offender institution | Staffordshire | 01782 463 300 | — |
| WMP Oldbury Custody Suite | Remand prison | Sandwell | +44 121 626 5000 | 60 |
| Worthing Custody Centre | Prison | West Sussex | — | — |
| Yarl's Wood Immigration Removal CentreMilton Ernest | Immigration detention | Bedford | +44-1234-821000 | — |