Wales Howell's School, Llandaff Howell's School, Llandaff is an independent day school for girls aged 3 to 18. Day Girls Pre-Prep Prep Senior 400 to 700 pupils Contact Details Cardiff Road, Llandaff, Cardiff, CF5 2YD www.howells-cardiff.gdst.net More pre-prep and prep schools in Wales View more Wales schools. More senior schools in Wales View more Wales schools.