While this is an unusual route to becoming a teacher, it’s certainly possible. First, you have to work towards getting a Diploma in Education and Training (DET). In order to qualify for this, you’ll need to have at least Level 2 skills in Maths and English, but if you’re thinking of teaching these subjects, you’ll need a Level 3. Additionally, you’ll have to be able to evidence at least 100 hours of teaching experience.
After obtaining your DET, you can apply for QTLS and obtain an Initial Teacher Education (ITE) certificate. After this, you’ll need to register for the Professional Formation, leading to the QTLS.