Accessibility statement
How the site is designed to remain usable with keyboards, screen readers and different screen sizes.
Design approach
The site uses semantic headings, labelled form fields, visible keyboard focus, a skip link, scalable text, descriptive link text and native disclosure controls. Navigation and core article content remain available without client-side search.
Known limitations
Search suggestions and live filtering require JavaScript, but the complete paginated answer archive is provided as an alternative. Production photographs are contextual and include alternative text; they are not required to understand the technical answer.
Feedback
Report an accessibility problem using the production enquiry page and include the page address, assistive technology and the task that could not be completed.
Last reviewed: 4 August 2026.