Illegal Interview Questions in the UK - What Employers Need to Know

Recruiting the right people is a major milestone for any business - but it’s also a legal minefield if you’re not careful. In the UK, interview questions that touch on certain personal characteristics can be unlawful under the Equality Act 2010. Even one careless question could expose your business to a discrimination claim, reputational damage, or costly legal proceedings.

In this guide, we’ll explain what makes an interview question illegal, the laws that govern recruitment practices, examples of what you can and can’t ask, and how to protect your business through proper documentation and compliance measures.

What Are Illegal Interview Questions?

Illegal interview questions are questions that could amount to discrimination because they relate to one of the protected characteristics under the Equality Act 2010. These are:

• Age
  
• Disability
  
• Gender reassignment
  
• Marriage or civil partnership
  
• Pregnancy or maternity
  
• Race (including colour, nationality, ethnic or national origins)
  
• Religion or belief
  
• Sex
  
• Sexual orientation
  

Asking about these areas can imply bias or suggest that hiring decisions are influenced by personal traits rather than ability or experience. Even if discrimination wasn’t intended, simply asking the question can be used as evidence of unfair treatment.

The Legal Context - Equality Act 2010 and Related Laws

The Equality Act 2010 is the cornerstone of anti-discrimination law in the UK. It makes it unlawful for employers to discriminate at any stage of employment - including job advertisements, application forms, interviews, and offers.

Under the Act, discrimination can occur in several ways:

• Direct discrimination – treating someone less favourably because of a protected characteristic.
  
• Indirect discrimination – applying a requirement or condition that disadvantages people with a protected characteristic (for example, insisting all staff work Sundays could discriminate against certain religions).
  
• Harassment – conduct that violates a person’s dignity or creates a hostile environment.
  
• Victimisation – treating someone unfairly for making or supporting a discrimination complaint.
  

Other relevant laws include:

• Data Protection Act 2018 and UK GDPR – limit how personal information about candidates can be collected, stored and shared.
  
• Rehabilitation of Offenders Act 1974 – restricts questions about past convictions unless the role is exempt (for example, working with children or vulnerable people).
  
• Employment Rights Act 1996 – underpins fair and transparent recruitment and employment practices.
  

Failing to comply can lead to claims at an Employment Tribunal, where compensation for discrimination is uncapped and often includes injury to feelings awards based on the Vento bands (currently up to around £56,000 for the most serious cases).

Common Examples of Illegal or Risky Interview Questions

Here are real-world examples that could expose your business to risk.

Age

• “How old are you?”
  
• “When did you finish university?”
  
• “Are you planning to retire soon?”
  

Gender, relationship or family status

• “Do you have or plan to have children?”
  
• “Who will look after your children when you’re at work?”
  
• “Are you married?”
  

Pregnancy or maternity

• “Are you pregnant?”
  
• “Are you planning to have a baby soon?”
  

Disability or health

• “Do you have any medical conditions?”
  
• “Have you had a lot of sick leave recently?”
  
• “Do you take any medication?”
  (You can only ask about health if it’s to assess the need for reasonable adjustments or the applicant’s ability to perform essential job duties.)
  

Religion or belief

• “Do you attend church?”
  
• “Would you be available to work Fridays/Saturdays/Sundays?” (unless this is genuinely necessary and objectively justifiable)
  

Race or nationality

• “Where are you from originally?”
  
• “What’s your native language?”
  (You can, however, ask “Do you have the right to work in the UK?” - that’s a lawful requirement.)
  

Sexual orientation or gender identity

• “Are you gay, straight or bisexual?”
  
• “What’s your gender identity?”
  

Political opinions or union membership

• “Are you a member of a union?”
  
• “What are your political beliefs?”
  

Criminal record

• “Have you ever been arrested?”
  
• “Do you have a criminal record?”
  Only ask if the conviction is unspent or relevant to the role.
  

What You Can Ask Instead

The safest approach is to focus entirely on skills, experience, and ability to perform the job.

Instead of asking: “Do you have young children?”
Ask: “This role requires occasional travel - would you be able to meet that requirement?”

Instead of asking: “What country are you from?”
Ask: “Do you have the right to work in the UK?”

Instead of asking: “Do you have any health issues?”
Ask: “Can you meet the physical requirements of this role, with or without reasonable adjustments?”

Instead of asking: “What religion do you follow?”
Ask: “Are you available to work the shift patterns required for this role?”

Keeping questions job-related ensures you get the information you need without straying into discriminatory territory.

Consequences of Asking Illegal Interview Questions

If a candidate feels they’ve been discriminated against or unfairly treated because of an unlawful question, they can file a claim with an Employment Tribunal. Even if you don’t hire them, you may still face:

• Uncapped compensation for discrimination and injury to feelings
  
• Legal costs and management time dealing with proceedings
  
• Reputational damage, especially in public Tribunal decisions
  
• Loss of trust among employees and candidates
  

The Equality and Human Rights Commission (EHRC) can also investigate systemic issues and issue compliance notices where discriminatory hiring practices are found.

In short, a single poorly worded question can cost far more than a well-planned compliance process.

How to Stay Compliant and Reduce Risk

A legally compliant hiring process doesn’t happen by accident – it’s built through good systems, documentation and training.

1. Review your recruitment materials

Ensure job adverts, application forms and interview templates are neutral, inclusive and focused on genuine job requirements.

2. Standardise your interview process

Use consistent interview questions for each role to ensure fairness and comparability. Keep notes on objective criteria, not personal impressions.

3. Train everyone involved in hiring

Provide equality and diversity training for managers, recruiters and anyone who might interview candidates. Include examples of unlawful questions and how to reframe them properly.

4. Update your key employment documents

A few essential documents can help you manage recruitment lawfully and fairly:

• Staff Handbook - sets out your company’s equality, diversity and inclusion policies, recruitment standards and code of conduct.
  
• Equal Opportunities Policy - explains your commitment to fair treatment during recruitment and employment.
  
• Recruitment and Selection Policy - outlines the procedures, selection criteria and approval process for hiring decisions.
  
• Workplace Agreements and Employment Contracts - clearly define employee rights, responsibilities and complaint procedures.
  
• Data Protection Policy – ensures compliance with UK GDPR during hiring and onboarding.
  

Having these documents in place – and ensuring they’re followed consistently – demonstrates compliance if a claim ever arises.

Seek expert legal advice

Employment law is complex, and even small businesses are expected to meet the same legal standards as large corporations. A legal expert can review your interview process, staff handbook and contracts to ensure they comply with the Equality Act and data protection laws. They can also train your hiring managers and help you implement fair recruitment practices.

Key Takeaways

• Under the Equality Act 2010, employers must not ask interview questions that relate to protected characteristics such as age, gender, disability, race, religion or sexual orientation.
  
• Unlawful questions can lead to Employment Tribunal claims, with uncapped compensation and reputational damage.
  
• Keep all interview questions job-related, focusing on skills, capability and legal work eligibility.
  
• Maintain a clear recruitment policy, staff handbook, and equal opportunities statement, and train your team on discrimination law.
  
• Regularly review your employment contracts, workplace agreements and data protection measures.
  
• Get legal advice to ensure your business meets its compliance obligations and minimises risk.
  

Need Help?

If you’d like help reviewing your hiring policies, staff handbook or employment contracts to ensure compliance with UK employment law, Sprintlaw can help. Our lawyers specialise in drafting and reviewing workplace documentation for small businesses and startups.

You can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.