About Us  Homepage |  Book a Lesson |  Online Contact Form |  Contact Info Cassio are a long established Driving School based in Watford, Hertfordshire. We cover Watford and surrounding areas. Cassio have Male and Female instructors with over 20 years experience offering quality driving tuition that is friendly and sympathetic to pupils from beginner level, up to post test level, in the form of Pass Plus courses and refresher tuition.. Nervous pupils are our speciality, and we aim to put all pupils, at any level, at ease. Many of our pupils come to us by way of recommendation! Call us now on 01923 228841, or use the links above for further information or to book a driving lesson.