Why students fail the pre-CAS interview: nine avoidable mistakes

If your pre-CAS interview failed, or you are worried yours will, start here. We found no official failure rate, so this post has no statistics. What universities and the UK government do publish is what they look for, and read together, those pages point to a short list of mistakes, most of which can be fixed before the day.

Why do students fail the pre-CAS interview?

A pre-CAS interview is a check your university runs before it issues your Confirmation of Acceptance for Studies, or CAS: the reference number you need before you can apply for a Student visa. The interviewer checks that you are a genuine student and looks at your motivation, money planning and future goals (LJMU). The problems that university and Home Office guidance point to are mostly avoidable: figures that differ from your CAS or bank papers, answers recited from a script, vague praise for the university, not knowing your own modules or fee, no clear plan after the course, an unexplained gap in study, notes or another person in the room, a camera or microphone that fails, and a missed deadline. Each one is covered below with the official page that describes it and a fix. Fixing all nine does not guarantee a pass. Your university decides whether to issue your CAS, and the Home Office decides your visa.

One note first. The pre-CAS interview comes before your CAS; a UKVI credibility interview, if you get one, comes during the visa application (University of Kent). Some points below come from UKVI's caseworker guidance, which sets out how caseworkers decide whether you are a genuine student. Universities cover much of the same ground: Kent says both interviews check that you are a genuine applicant, and Aston's policy says its questions simulate those of a Home Office interview (Aston policy).

1. Your figures do not match your CAS or bank papers

Example (every example here is made up): your CAS shows a tuition fee of £16,000 with £5,000 already paid. In the interview you say the fee is "about fifteen thousand" and that your uncle is paying, but the bank letter is in your father's name. Each answer sounds fine alone; together, they disagree.

What the guidance says. The course fee you must show money for, for up to one academic year, is the amount on your CAS. A CAS is an electronic record the Home Office can see, and UKCISA warns that an application may be refused if the CAS details and the application form do not match (UKCISA). The caseworker guidance asks whether your source of funds is credible and how the money was acquired.

The fix. Write one sheet before you practise: course, level, length, start date, fee, amount paid, amount left, who pays, where the money is held, and monthly living costs. Every money answer comes from that sheet. Our guide to UK student visa money rules and funding questions covers them one by one.

2. You memorised a script

Example: you learned a long "Why the UK?" answer from a senior's notes. The interviewer asks "Why not Canada?" and the same paragraph comes out, word for word.

What the guidance says. Plymouth tells students to answer in their own words and not rely on scripts (Plymouth). LJMU rules out notes, websites and scripts (LJMU). Aston picks most of its questions at random, including two "wildcard" questions, and shows none of them in advance, partly to stop students sharing question sets; its assessors also judge whether answers seem rehearsed or scripted (Aston policy).

The fix. Learn the points, not the sentences. Say each answer aloud three different ways, keeping the facts fixed. Our UK credibility interview questions guide shows where each answer comes from in your own papers.

3. "It has a good reputation" is your whole answer

Example: "The university has a good reputation and good facilities, so I applied." That could describe almost any university.

What the guidance says. Kent asks students to avoid generic answers that could apply to any UK university or course (Kent). Coventry says the Home Office interviewer asks why you chose Coventry, including the research you did (Coventry). Reputation does appear in the caseworker guidance, as one of the "pull factors" that draw students to the UK, but that is about choosing the UK over other countries, not about choosing one university.

The fix. Add things the interviewer can check: a module, how the course is assessed, a placement option, why this offer beat your others. Our post on answering "Why this university?" builds one step by step.

4. You do not know your own course, length or fee

Example: asked to name two modules, you repeat the course title. Asked the fee, you quote rupees from your loan letter, not the pounds on your CAS.

What the guidance says. Kent says you should know your course's duration, RQF level and qualification. Coventry lists your understanding of the course and its modules as an interview topic. The caseworker guidance looks at your knowledge of, and research into, the course and institution.

The fix. Open your CAS and the course page side by side. Note the title, level, length, start date, three modules and how they are assessed, and the fee in pounds. Say them aloud daily for a week.

5. No clear plan after the course, or one that does not fit the rules

Example: "After my master's I will stay and work in the UK for two years." If your course ends in 2028, gov.uk's current rules give 18 months, not two years.

What the guidance says. The caseworker guidance considers whether the course is relevant to your plans after study, in the UK or overseas, and whether you intend to keep to the terms of your visa. A Graduate visa lasts 2 years if you apply on or before 31 December 2026, 18 months from 1 January 2027, and 3 years after a PhD, and needs a successfully completed eligible course.

The fix. In two sentences, link the course to a specific role or path. If you mention the Graduate visa, use the current gov.uk length for your dates.

6. An unexplained study gap

Example: you finished a BCom in 2021 and are starting an MBA in 2027. Asked about the years between, you say "I was preparing."

What the guidance says. The caseworker guidance asks how long it has been since you last studied, whether you have sound reasons for returning to study, especially after a significant gap, and whether the course is academic progression. It looks for sound reasons; it does not say a gap rules you out.

The fix. Tell the gap in order: the job, what you did there, why you are returning now, and how the course builds on it. Check every date against your CV and application.

7. Someone else in the room, or notes on the screen

Example: a cousin sits behind the laptop "to help with English", or your answers are open in another window and your eyes follow them.

What the guidance says. Aston's policy tells assessors to check your passport photo page against the person on camera and to ask to see the room, so that no one else is helping. Signs of reading it lists include eyes moving across the screen, looking down, and looking past the camera, which may mean someone else is there; constant eye contact is not expected (Aston policy). LJMU rules out notes and websites during the interview.

The fix. Sit alone with the door closed, passport ready, phone away, every other tab shut. Follow your own university's instructions where they differ.

8. Your camera or microphone fails

Example: you record on a phone with a nearly flat battery and a weak signal, and the connection drops at question six.

What the guidance says. LJMU asks for a working webcam and microphone so it can clearly see and hear you, in a quiet, well-lit space. Aston's policy says a recorded interview cut short, for example by internet failure, must be sat again from the start, and repeated exits lead to a face-to-face interview. Lincoln asks you to check the video app works on your device before a live interview (Lincoln).

The fix. Do a test recording the day before, same time, same room. Charge and plug in the device, and sit close to the router. Our pre-CAS interview checklist covers the full set-up.

9. You miss the deadline or do not attend

Example: the invitation lands in your spam folder during exam week, and you see it eight days later.

What the guidance says. BCU asks applicants to complete the recorded interview within seven working days (BCU). Aston's policy gives seven days, a reminder, then seven more, and treats not joining a face-to-face interview within 15 minutes of the start time, without contacting the team, as an automatic fail. At the visa stage, missing a requested interview without a reasonable explanation can lead to refusal (UKCISA; caseworker guidance).

The fix. From the day you accept your offer, check your email (spam included) and the university's portal daily, and book the earliest slot. If something real stops you, write to the university before the deadline.

What happens if your pre-CAS interview failed?

Read your outcome email and your university's own page before you do anything else. Each university sets its own rules: some offer a resit or a second interview, some allow an appeal, and some set a limit on attempts. Our guide to the pre-CAS interview and the UKVI credibility interview sets out what LJMU, Lincoln and Aston publish on result times and second chances.

Without a CAS you cannot apply for the Student visa. If you get a second chance, fix the specific problem rather than repeating the same answers. Be honest throughout. For the visa application itself, UKCISA warns that dishonest answers can lead to accusations of deception and to the refusal of that application and any future one.

How practice catches some of these mistakes

Hilingo's UK CAS Interview prep builds key points and an example answer for each question from a profile of your own offer, CAS and money papers; then you answer on camera against a timer. Some of the nine show up in the feedback:

• Contradiction flag (mistake 1): an answer that contradicts your profile, such as a fee in pounds that differs from it, or a different payer.
• Recital flag (mistake 2): an answer delivered flatly, almost word for word from your written answer.
• Tab and face flags (mistake 7): leaving the interview tab, or a second face on camera.

Each practice set starts with a camera, microphone and internet check (mistake 8). Practice will not fix a vague plan or a missed deadline, and it does not prevent a fail: your university decides.

If you want to practise this way, see what is included.

See UK CAS Interview prep

Frequently asked questions

Will a failed pre-CAS interview affect my visa?

The pre-CAS result is the university's decision about your CAS; the visa decision is the Home Office's. Without a CAS you cannot apply for a Student visa. We found no official page saying whether a university shares its interview result with the Home Office, so we will not guess.

Sources (accessed 6 October 2026)

• GOV.UK, Student visa: your course
• GOV.UK, Student visa: money you need
• GOV.UK, Graduate visa: overview
• Home Office, Student and Child Student caseworker guidance (version 14.0): genuine student rule, credibility factors and interviews
• UKCISA, Student route: eligibility and requirements
• University of Kent, Credibility interviews
• Coventry University, Credibility interviews
• University of Plymouth, UKVI credibility interviews
• Liverpool John Moores University, Pre-CAS interviews
• Aston University, Pre-CAS interview policy (PDF, May 2026)
• Birmingham City University, CAS Shield: a step-by-step guide for international offer holders
• University of Lincoln, Pre-CAS interview