Grand Union Canal | Walks near me

Lee Navigation | London Canal Map

Providing places for people | Canal & River Trust

Cymru | Canal & River Trust

Threats to our waterways | Canal & River Trust

Keeping history alive | Canal & River Trust

Lancaster Canal | Canal network map

Regent's Canal | London Canals

Helping nature thrive | Canal & River Trust

Llangollen Canal | River walks near me

When specifying accessible names via `aria-labelledby`, ensure that the 
label elements exist.

## Explanation

Accessible names are required for many parts of a page, including form controls.
One way to accomplish this is to use `aria-labelledby` to specify the ID or IDs of 
other elements which contain a label. For example:

```html
<h2 id="dialog-labell">Important message!</h2>
<dialog aria-labelledby="dialog-label">
```

In this example, the `aria-labelledby` for the `<dialog>` points to an ID of `dialog-label`,
which doesn't exist. The heading it refers to instead has an ID of `dialog-labell`, presumably 
a typo.

## Why this matters

It isn't usually clear when an accessible name is broken, even during user testing.

This check helps to identify where an element clearly intended to have a label, but
that label is missing.

When a label is broken, it may be impossible for a user of assistive technologies
to understand what that element does.

missing-aria-labelled-by

August 2025

July 2025

Canal & River Trust

Title / URL	Issues
Grand Union Canal \| Walks near mecanalrivertrust.org.uk/canals-and-rivers/grand-union-canal	1
Lee Navigation \| London Canal Mapcanalrivertrust.org.uk/canals-and-rivers/lee-navigation	1
Providing places for people \| Canal & River Trustcanalrivertrust.org.uk/our-cause/providing-places-for-people	1
Cymru \| Canal & River Trustcanalrivertrust.org.uk/cy/cymru	1
Threats to our waterways \| Canal & River Trustcanalrivertrust.org.uk/our-cause/threats-to-our-waterways	1
Keeping history alive \| Canal & River Trustcanalrivertrust.org.uk/our-cause/keeping-history-alive	1
Lancaster Canal \| Canal network mapcanalrivertrust.org.uk/canals-and-rivers/lancaster-canal	1
Regent's Canal \| London Canalscanalrivertrust.org.uk/canals-and-rivers/regents-canal	1
Helping nature thrive \| Canal & River Trustcanalrivertrust.org.uk/our-cause/helping-nature-thrive	1
Llangollen Canal \| River walks near mecanalrivertrust.org.uk/canals-and-rivers/llangollen-canal	1

Fix missing ARIA label IDs

Canal & River Trust

Where this issue has occurred