Start or grow a business | University of Westminster, London

Research | University of Westminster, London

404 | University of Westminster, London

Scholarships | University of Westminster, London

About Zone29 | University of Westminster, London

International | University of Westminster, London

Grow your career | University of Westminster, London

University preparation courses | University of Westminster, London

Our building and spaces | University of Westminster, London

Language tests | University of Westminster, London

All `id` attributes on a page must be unique, or accessible technologies used by the page 
can stop working.

## Example

The duplicate `id` here makes it unclear which label belongs to which input field:

```html
<label for="name">Your name</label>
<input id="name">

<label for="name">Company name</label>
<input id="name">
```

As a result, accessible technologies like screen readers can fail to read out the 
correct text, or may read out no text at all.

Similar issues can occur when using `aria-labelledby` and `aria-describedby`.

## How to fix

Ensure all `id` attributes on a page are unique. 

## More information

See [Technique H93](https://www.w3.org/TR/2016/NOTE-WCAG20-TECHS-20161007/H93) 
for more information.

duplicate-id

February 2026

January 2026

University of Westminster

Title / URL	Issues
Start or grow a business \| University of Westminster, Londonwww.westminster.ac.uk/zone29/students/start-or-grow-a-business	12
Research \| University of Westminster, Londonwww.westminster.ac.uk/research	8
404 \| University of Westminster, Londonwww.westminster.ac.uk/invented-url-for-404-page	8
Scholarships \| University of Westminster, Londonwww.westminster.ac.uk/study/fees-and-funding/scholarships	8
About Zone29 \| University of Westminster, Londonwww.westminster.ac.uk/zone29/about-zone29	8
International \| University of Westminster, Londonwww.westminster.ac.uk/international	8
Grow your career \| University of Westminster, Londonwww.westminster.ac.uk/zone29/alumni/grow-your-career	8
University preparation courses \| University of Westminster, Londonwww.westminster.ac.uk/international/university-preparation-courses	8
Our building and spaces \| University of Westminster, Londonwww.westminster.ac.uk/zone29/about-zone29/our-building-and-spaces	8
Language tests \| University of Westminster, Londonwww.westminster.ac.uk/study/language-tests	8

Fix duplicate IDs

University of Westminster

Where this issue has occurred