Global operations | Royal Air Force

Site map | Royal Air Force

First time visit: View without clicking anything

Royal Air Force | Home

Site Map | Royal Air Force Air Cadets

RAF Syerston | Royal Air Force

Battle of Britain | Royal Air Force

Website Feedback | Royal Air Force

Chinook Display Team | Royal Air Force

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

May 2025

April 2025

Royal Air Force

Title / URL	Issues
Global operations \| Royal Air Forcewww.raf.mod.uk/what-we-do/global-operations/	34
Site map \| Royal Air Forcewww.raf.mod.uk/site-map/	18
First time visit: View without clicking anythingwww.raf.mod.uk/	6
Royal Air Force \| Homewww.raf.mod.uk/	6
Site Map \| Royal Air Force Air Cadetswww.raf.mod.uk/aircadets/site-map/	4
Royal Air Force \| Homewww.raf.mod.uk/?display=login&linkinvalid=true	4
RAF Syerston \| Royal Air Forcewww.raf.mod.uk/our-organisation/stations/raf-syerston/	2
Battle of Britain \| Royal Air Forcewww.raf.mod.uk/what-we-do/our-history/anniversaries/battle-of-britain/	2
Website Feedback \| Royal Air Forcewww.raf.mod.uk/contact-us/feedback/	2
Chinook Display Team \| Royal Air Forcewww.raf.mod.uk/display-teams/chinook-display-team/	2

Fix duplicate IDs

Royal Air Force

Where this issue has occurred