The guidance on transitional arrangements has been revised to include the new duties on children and young people in custody which include:

New provisions for children and young people aged 18 and under in youth custody commence on 1st April 2015.
For those entering or already in youth custody with a statement of SEN, the special educational provision in the statement will be deemed as if it is made in an EHC plan. Local authorities will be under a duty to arrange appropriate support and must conduct a ‘transfer review’ on release unless they have conducted one in youth custody or are due to conduct a review under the wider procedures for transfer.
Local authorities should take reasonable steps to inform those with LDAs in custody of their right to request an EHC needs assessment. For young people with LDAs who request an EHC needs assessment, where the local authority believes it may have to make special educational provision on release it must carry out an EHC needs assessment.
See website for more information