The UKVI may invite you to attend a credibility interview as part of the Student visa application process. You should be notified by email if you are required to attend one.
The interviews are carried out at the Visa Application Centre as part of the appointment where you provide your biometrics (fingerprints). If you are asked to attend an interview you will need to speak to a UKVI officer based in the UK via Skype or Zoom.
The purpose of the interview is to confirm that you are a genuine student. You will be asked a number of questions, which may include:
For most applicants, the interview should only be 5-10 minutes long. A transcript of the interview will be sent to the visa officer who is considering your visa application. This officer will consider this along with the supporting documents you submit with your visa application when they make a decision to grant your visa.