"The texts read that there was 'raw' drugs for sale. Poppy said: 'do you want me to ask' and this introduced the supply of drugs to a party. It was decided how much Poppy wanted and a delivery was made to where Poppy was. There were texts also disputing how much money had been paid."

Police also found a set of electronic scales in Joel's bedroom alongside a notepad which at the top had a list called "snowers". There was also a list of drug buyers for cocaine and cannabis called "what we sniff".

Neither the brother nor the sister gave comment in interviews to police.

Joel also pleaded guilty to possessing 2,030 MDMA tablets worth £6,090 and 606g of cannabis worth £8,480 after the drugs were found hidden in a bucket inside his wardrobe during a different police search.

His lawyer Henry Blackshaw said: "The strongest mitigation for him is his age and his lack of maturity. The gravity of the offending perhaps did not give the correct connotations to him. Recreational use of of cocaine with young people is very prevalent in society now which could reduce the gravity of the situation.

"He could also have been excited by the illicit use of cocaine. Through me he displays a significant degree of guilt including the situation his sister finds herself in. He is very conscious of her being here in court no small part is due to him."