Text to Switch Mobile Provider | Three

SIM Only Deals | SIM Only Contracts, Plans and Pay As You Go | Three

3UK Self Service

Like New phones | Refurbished iPhone, Samsung phones | Three

Connect Together | Discounts for friends & family | Three

5G Phone Deals | Our Latest 5G Mobile Phones | Three

Mobile Phone Deals – Pay Monthly Phone Contracts | Three

Explore our range of mobile phone brands - Apple, Samsung, Google and more | Three

Best Broadband Deals | Home & Mobile Broadband Deals | Three

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

January 2026

December 2025

Three

Title / URL	Issues
Text to Switch Mobile Provider \| Threewww.three.co.uk/why-three/switching	1
SIM Only Deals \| SIM Only Contracts, Plans and Pay As You Go \| Threewww.three.co.uk/sim	1
3UK Self Servicewww.three.co.uk/shop/review-basket	1
Like New phones \| Refurbished iPhone, Samsung phones \| Threewww.three.co.uk/offers/refurb-like-new	1
Connect Together \| Discounts for friends & family \| Threewww.three.co.uk/offers/multi-line	1
5G Phone Deals \| Our Latest 5G Mobile Phones \| Threewww.three.co.uk/network/5g/5g-phones	1
Mobile Phone Deals – Pay Monthly Phone Contracts \| Threewww.three.co.uk/shop/phones	1
Explore our range of mobile phone brands - Apple, Samsung, Google and more \| Threewww.three.co.uk/mobile-phones/brands	1
3UK Self Servicewww.three.co.uk/shop/anonymous-topup	1
Best Broadband Deals \| Home & Mobile Broadband Deals \| Threewww.three.co.uk/broadband	1

Fix missing ARIA label IDs

Three

Where this issue has occurred