Basic Accessibility Check
Contents
Accessibility notice
A Basic accessibility check External link, opens in a new window. has been completed for this website, the BAS Data Catalogue, available at data.bas.ac.uk (and several preview URLs).
Limitations of this check
This check does not cover the homepage for this website as it belongs to a separate service.
This check does not cover downloads linked to from item pages as:
- they use technical and/or scientific data formats that cannot be easily provided in an accessible alternative
- they contain detailed and specialist information that cannot be easily conveyed in plain language
This check does not cover interactive maps used to show the geographic extent of items.
Content reviewed by this check
A sample of this website's content was reviewed including:
- legal pages (including this accessibility check)
- a collection page
- an item page (including the item enquiry form but excluding the item extent map)
Results of this check
Issues we found when reviewing the sample content:
- some links within item descriptions may not include sufficient context (such as DOIs)
- some page elements have poor colour contrast
- admonition title elements do not state they are labels (presentation) rather than page headings
- anti-spam checks on item enquiry forms may not work with all assistive technologies
We will regularly review these issues, and repeat this review, as part of improving and maintaining this website.
Feedback and requesting accessible content
To request information on this website in a different format please contact us with the following:
- the web address (URL) of the content
- your email address and name
- the format you need - for example, large print
Changes to this page
2026-04-02
Resolved issue with the site feedback widget not working when CSS styles are disabled.
Resolved issue with missing text in the site feedback widget close button when styles are disabled.
Resolved issue with item tabs not being visually highlighted when using a keyword to navigate
Improved screen reader support for external links
Improved the use of semantic elements (inc. in item summary and item previews)
2025-10-10
Resolved issue with item thumbnail alternate text using aria-describes to link images with abstracts.
Added potential issue caused by spam protection added to item enquiry forms.
2025-08-15
Initial accessibility check.