BBC News
Published
Lanoi Liddell from Cardiff pleaded guilty to supplying MDMA and ketamine between October and November.
He also pleaded guilty to offering to supply cocaine and offering ketamine.
Sitting at Cardiff Crown Court, Judge Jeremy Jenkins told him a substantial period of imprisonment was unavoidable . He was remanded in custody to be sentenced on 22 February.
In mitigation, his defence barrister Andrew Taylor told the court his client had faced many difficulties in his life .
He said he suffered from ADHD, depression and autism.
23 December 2020: A previous version of this story published on 22 December contained inaccurate information. This was clarified as soon as it became apparent. We apologise for these mistakes.