How to Handle Illegal or Inappropriate Interview Questions

Most interviewers are well-intentioned and reasonably well-trained. But sometimes, through ignorance, poor preparation, or occasionally something more deliberate, you get asked something you shouldn't be asked. A question about your plans to have children. Your age. Your religious beliefs. Your health.

It's more common than employers would like to admit. Research by the Chartered Institute of Personnel and Development has consistently found that unconscious bias shapes hiring decisions, and inappropriate questions are often the visible symptom of that bias working its way into the room. Knowing your rights, and knowing how to respond without derailing your chances or your composure, is one of the most practically useful things you can take into an interview.

This guide covers what's legal and what isn't, how to respond in the moment, and what you can do afterwards.

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What Makes an Interview Question Illegal?

The Equality Act 2010 makes it unlawful to discriminate against someone because of a "protected characteristic," a category of personal attribute that cannot lawfully be used against them in employment decisions.

The nine protected characteristics are:

1. Age
2. Disability
3. Gender reassignment
4. Marriage and civil partnership
5. Pregnancy and maternity
6. Race (including colour, nationality, and ethnic origin)
7. Religion or belief
8. Sex
9. Sexual orientation

Questions that probe these characteristics, where the answer could be used to discriminate, are problematic. Not all of them are strictly "illegal" in every possible context, but they put the employer at serious legal risk, and you are under no obligation to answer them.

There are narrow exceptions worth knowing. An employer can ask about a disability if they need to make reasonable adjustments for the interview itself. Certain roles with a genuine occupational requirement can ask about protected characteristics: a faith school can ask whether a teacher shares their religious ethos, for example, or a role within an LGBTQ+ organisation might legitimately require the postholder to identify as part of that community. But these exceptions are exactly that, narrow and specific. Most employers asking these questions cannot point to a genuine occupational requirement. They're asking because they want to know, which is a very different thing.

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The Most Common Inappropriate Questions

Family and pregnancy

"Do you have children?" "Are you planning to start a family?" "Would childcare be an issue for you?"

These are the most frequently reported inappropriate questions, and they are most often directed at women. The underlying concern, that a candidate might take maternity leave or have caring responsibilities that affect availability, is not a lawful reason to factor into a hiring decision. Full stop.

You'll sometimes hear these framed in ways that sound reasonable: "This role requires real flexibility, is that going to work for you?" That's a legitimate question about the job's demands. "Do you have young children?" is not, because it probes the characteristic rather than the capability.

Age

"How old are you?" "When did you graduate?" "How long before you retire?"

Age discrimination in UK employment is unlawful. Employers cannot make decisions based on age, whether the concern is that you're "too young to have the authority" or "too experienced to fit the team's culture." Both are discriminatory framings.

Watch for indirect versions of this question. Asking for your O-level results, rather than GCSEs, is designed to place you before 1988. Asking what year you started your career does the same job. The intent matters, even if the wording is technically about something else.

Health and disability

"Have you had any serious illnesses?" "Do you have any health conditions we should know about?" "How many sick days did you take last year?"

Pre-offer health questions are not permitted under the Equality Act. The boundary is clear: before a job offer is made, an employer cannot ask about your health or disability status. After a conditional offer, a health questionnaire can be used, but only within limits (more on that below).

The narrow pre-offer exceptions: employers can ask whether you need any adjustments for the interview process itself, and they can ask whether you're able to perform a function that is intrinsic to the role and couldn't reasonably be adjusted. A role that requires manual lifting of loads above a set weight might attract a specific question. "Have you had any serious illnesses?" does not meet that bar.

Religion and belief

"What religion are you?" "Do you observe religious holidays?" "Would your beliefs create any problems for working here?"

Religion and belief are protected. These questions are inappropriate unless there is a genuine occupational requirement. Without one, they have no place in an interview. This includes questions about non-religious beliefs too: philosophical beliefs that are genuinely held and have a similar status to religious belief are also protected.

Nationality and immigration status

"Where are you originally from?" "Is English your first language?" "When did you move to the UK?"

Questions that probe nationality, ethnic origin, or immigration background are discriminatory. There's an important distinction to understand here: employers are legally required to check your right to work in the UK, but that check happens through document verification, not through interview questions designed to establish where you're from. "Can I see your right to work documents?" is lawful. "Where are you originally from?" is not.

Sexual orientation and relationship status

"Are you married?" "Do you have a partner?" "Are you gay?"

None of these have any legitimate relevance to your ability to do a job. They have no place in an interview room.

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How to Respond in the Moment

When you're asked something inappropriate, you have several options. Which you choose depends on how confident you feel, how much you want the role, and how deliberate the question seemed.

Answer it and move on

If the question feels like innocent awkwardness rather than intentional probing, you might choose to answer briefly and redirect. "I do have young children, yes. It hasn't affected my track record at all. Can I tell you more about how I've managed high-pressure projects in my current role?" This is the path of least resistance and sometimes the most pragmatic choice. Choosing it doesn't mean you endorse the question.

Redirect without answering

"I'd prefer to focus on my skills and experience for this role. I'm happy to talk about anything directly relevant." Polite. Firm. It signals awareness without creating confrontation, and it keeps the interview on track.

Ask for clarification about relevance

"I want to make sure I understand what you're looking for. Could you help me understand why that's relevant to the role?"

This technique works particularly well when a question might be poorly phrased rather than deliberately discriminatory. It hands the interviewer a rope, and they'll often realise mid-sentence that they've tied themselves in a knot. Most interviewers, when asked to justify an inappropriate question, will retract it and move on. You've flagged the issue without making it a confrontation.

Address it directly

"I don't think that's something I need to answer as it relates to a protected characteristic. I'm genuinely happy to discuss anything that's relevant to my ability to do this role well."

This is the most direct approach. It's also the most uncomfortable, for both parties. Use it when you believe the question was deliberate, or when you want to put your concern on the record clearly. Some candidates, particularly those who've encountered this pattern before, prefer this approach precisely because it creates a clear moment that they can document later.

No single response is universally correct. All of these are valid. What matters most is that you don't feel obligated to answer something you shouldn't have been asked.

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How This Should Affect Your Decision

An inappropriate interview question is information. What it tells you depends on the context.

One poorly phrased question from a nervous line manager who then moved on quickly? That might simply reflect poor interviewer training, which is common and doesn't necessarily reflect the organisation's broader culture. A string of inappropriate questions, or a defensive reaction when you gently pushed back, tells you something more significant about what it would actually be like to work there.

Think about it this way: if an organisation doesn't train its interviewers to understand basic legal requirements, what does that suggest about how it handles performance reviews, disciplinary processes, or flexible working requests? Interview conduct is often a window into operational culture.

You're assessing them as much as they're assessing you. If something made you uncomfortable, that discomfort is data worth taking seriously before you accept an offer.

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What You Can Do Afterwards

If you believe you were discriminated against, whether you were rejected shortly after an inappropriate question or the questioning was systematic, you have real options.

Keep a record. Do this as soon as you leave the building, while it's fresh. Write down what was asked, who asked it, in what context, and how you responded. Include the date, time, and the names of everyone present. If you were rejected, note when and how you were informed. This contemporaneous record is exactly what an employment solicitor or tribunal would want to see.

Raise it with the employer. A factual email to HR or the hiring manager, describing what was asked and expressing your concern, can prompt a formal response. It also creates a written trail. Employers often respond more seriously than you'd expect when something is put in writing.

Contact ACAS. The Advisory, Conciliation and Arbitration Service offers free, impartial advice on employment rights and is the right first call if you're considering going further. Their helpline is 0300 123 1100. Before you can bring a tribunal claim, you are required to notify ACAS first, so contact them early.

Make a tribunal claim. Discrimination in the recruitment process is actionable at an Employment Tribunal. You have three months minus one day from the date of the discriminatory act to bring a claim. That deadline moves fast, so don't delay if you're considering this route.

The evidential threshold matters here. You'd need to show that your protected characteristic was the reason, or a significant reason, for the unfavourable treatment. A single inappropriate question won't always be enough on its own. But a pattern of questions, a rejection that followed immediately, or a dismissive response when you raised your concern can all build a picture. In clear cases, the option is absolutely worth pursuing.

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A Note on Pre-Employment Health Checks

Some employers use health questionnaires as part of their onboarding process, and this is lawful. The critical word is "onboarding," meaning after an offer has been made. A health questionnaire used before an offer is made is unlawful, with only the narrow exceptions already described.

If a health questionnaire is used to withdraw a conditional offer, the employer must demonstrate that the health condition means you couldn't perform the role even with reasonable adjustments made. Using that process to screen out disabled candidates without that justification is unlawful disability discrimination. If this has happened to you, it's one of the cleaner cases to take to ACAS because the timeline and causation are usually straightforward to establish.

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What to Do This Week

If you have interviews coming up, a few practical steps will put you in a stronger position.

Research the company's values and culture before you go in. Glassdoor reviews and LinkedIn posts from current employees often reveal whether an organisation has a genuine commitment to inclusion or whether it's performative. You'll walk into the room with better calibrated expectations.

Decide in advance how you'd respond to an inappropriate question. Candidates who've thought through their options beforehand are far less likely to freeze, answer something they shouldn't, or react in a way that creates more awkwardness than necessary. Pick a response style that feels authentic to you and practise saying it out loud.

And if something does happen, write it down before you go to sleep. Not for any dramatic reason, but because a contemporaneous record gives you options, and having options is always better than not.

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Your protected characteristics are not relevant to your ability to do a job. The law agrees. Go into interviews knowing that, and knowing what to do if someone forgets it.