What is the penalty under UK law (CDG 2009 / Health and Safety at Work Act) for transporting Class 7 radioactive materials without a valid ADR driver certificate covering Class 7?

1. A verbal reprimand from a parking attendant
2. A £5 toll surcharge
3. No penalty if the driver drives during daylight hours
4. Criminal prosecution by the ONR/HSE, resulting in unlimited fines, vehicle prohibition, and potential imprisonment for severe breaches