The following tables give the population and capacity of each Young Offender Institution in England and Wales.
As at June 2005 As at June 2006 As at June 2007 Establishment Population Capacity Population Capacity Population Capacity Ashfield 310 360 357 380 385 400 Aylesbury 425 438 442 444 441 444 Brinsford 444 493 473 489 473 489 Castington 352 410 385 410 386 410 Cookham Wood — — — — — — Deerbolt 434 518 407 458 417 449 Feltham 608 761 604 764 599 764 Glen Parva 785 808 799 808 813 808 Hindley 403 455 418 455 502 515 Huntercombe 340 368 356 368 359 365 Lancaster Farms 521 527 518 527 530 527 Northallerton 196 209 218 248 249 252 Portland 392 398 479 524 542 557 Reading 291 297 283 297 262 287 Rochester 391 392 388 392 387 392 Stoke Heath 624 690 663 690 673 690 Swinfen Hall 581 590 606 620 619 620 Thorn Cross 234 316 205 321 240 321 Warren Hill 211 222 216 222 212 222 Werrington 134 148 155 162 146 162 Wetherby 342 360 338 363 354 360
Establishment Population Capacity Population Capacity Ashfield 397 400 338 400 Aylesbury 437 444 433 444 Brinsford 525 569 521 569 Castington 398 410 371 410 Cookham Wood 34 59 86 90 Deerbolt 443 453 431 513 Feltham 629 762 680 762 Glen Parva 811 808 793 808 Hindley 494 523 289 515 Huntercombe 347 365 260 365 Lancaster Farms 521 517 493 530 Northallerton 241 252 232 252 Portland 614 624 553 624 Reading 240 297 242 297 Rochester 388 392 647 700 Stoke Heath 619 634 580 678 Swinfen Hall 614 624 616 624 Thorn Cross 233 322 301 322 Warren Hill 214 222 188 222 Werrington 137 162 130 162 Wetherby 310 320 360 408 Note: Only those establishments with a predominant function of YOI are shown.
These figures have been drawn from administrative IT systems which, as with any large scale recording system, are subject to possible errors with data entry and processing.