Drug driving is a serious offence and the police, the Driver and Vehicle Licensing Agency (DVLA), and other organisations, use what is known as endorsement codes to classify offences. All the codes explained here on this page are related to drug driving...
SP10 to SP50 offences must stay on a driving licence for 4 years from the date of the offence.
Exceeding goods vehicle speed limits
Exceeding speed limit for type of vehicle (excluding goods or passenger vehicles)
Exceeding statutory speed limit on a public road
Exceeding passenger vehicle speed limit
Exceeding speed limit on a motorway