You can see the programme regulations here
A student will attend:
A minimum of 150 (one hundred and fifty) sessions of Clinical Practice:
A minimum of 100 (one hundred) of which will be under the direct supervision of a qualified speech and language therapist and reflect diversity of clients by age, aetiology and complexity, as well as diversity of clinical settings and methods of intervention.
The remaining 50 (fifty) sessions will be clinically related.