Accessibility is often treated as an afterthought by online retailers, but it carries genuine legal exposure under UK equality law, excludes a substantial share of potential customers when ignored, and is usually far cheaper to build in from the start than to retrofit later.
The legal position in the UK
The Equality Act 2010 requires service providers, including online retailers, to make reasonable adjustments so that disabled customers aren't put at a substantial disadvantage compared with non-disabled customers — this duty applies to websites as a channel through which a service is provided, not only to physical premises. While UK law doesn't mandate a specific numerical accessibility standard the way some other jurisdictions' regulations reference WCAG explicitly, the Web Content Accessibility Guidelines (WCAG) 2.1 or 2.2 at level AA is the standard UK courts and regulators generally treat as evidence of 'reasonable' compliance.
Legal claims against UK retailers specifically over website accessibility remain less common than in the US, where the Americans with Disabilities Act has produced a substantial volume of website accessibility litigation, but the risk is real and growing, and public sector and larger commercial contracts increasingly require documented accessibility compliance as a condition of doing business.
Why accessibility is also a straightforward business case
Roughly one in five people in the UK reports living with a disability, and a meaningful proportion of those have a condition that affects how they use a website — visual impairment, motor difficulties affecting fine mouse or touch control, cognitive differences affecting how they process complex layouts or unclear language. An inaccessible checkout doesn't just risk legal exposure; it actively turns away a substantial segment of paying customers who would otherwise have completed a purchase.
The most common accessibility failures on e-commerce sites
- Insufficient colour contrast between text and background, particularly in sale badges and promotional banners.
- Product images without meaningful alt text, making them invisible to screen reader users and search engines alike.
- Forms (checkout, account creation) without properly associated labels, confusing screen readers and voice control users.
- Interactive elements (filters, size selectors, carousels) that can't be operated using a keyboard alone.
- Video or animated content without captions or a way to pause auto-playing motion.
- Error messages on checkout forms that aren't clearly associated with the specific field that failed validation.
Getting started without a full rebuild
A full WCAG AA audit and remediation project can feel daunting, but meaningful progress doesn't require rebuilding your site from scratch. Start with an automated scan using a free tool like WAVE or the Lighthouse accessibility audit built into Chrome DevTools, which will surface a substantial share of common issues (missing alt text, contrast failures, missing form labels) without any manual review. Prioritise fixes on your highest-traffic, highest-conversion pages first — your homepage, top product pages and the checkout flow — rather than attempting comprehensive coverage of your entire site in one pass.
Automated tools catch perhaps a third to half of WCAG success criteria reliably; the rest — logical reading order, meaningful link text, keyboard navigation flow — require manual testing, ideally including testing with an actual screen reader (VoiceOver on Mac and iOS, NVDA on Windows, both free) to experience the site the way an affected customer genuinely would.
Building accessibility into ongoing operations
Rather than treating accessibility as a one-off remediation project, build basic checks into your regular content and development workflow: require alt text as a mandatory field when uploading product images, include a contrast check in your design review process for any new page templates or promotional banners, and test new checkout or account flow changes with keyboard-only navigation before launch. This ongoing discipline is far cheaper than periodic large-scale remediation projects, and prevents new accessibility debt accumulating as fast as you fix the old debt.
Working with specialists for a formal audit
For retailers with meaningful legal exposure — larger catalogues, public sector customers, or a history of accessibility complaints — a formal audit from an accessibility specialist or agency, ideally including testing by people who actually rely on assistive technology day to day rather than automated tooling alone, provides a more defensible and genuinely more useful assessment than a DIY review. This is a worthwhile investment once your site and customer base have grown to a scale where the cost of a serious accessibility complaint or lost contract meaningfully exceeds the audit cost, even where UK legal risk remains lower than in some other markets.
Taking This Further
None of the decisions above happen in a vacuum, and it's worth thinking about how web accessibility and WCAG compliance for UK online stores: what you're legally and practically required to do fits alongside the other choices you're making as a UK online retailer. We cover this in more detail in Site Speed and Core Web Vitals: A Practical Guide for Online Stores, which is worth reading alongside this piece.
For related reading: If you haven't already, UK Business Registration, Legal Structures and Compliance for Online Sellers is a useful companion read on this exact point. This connects directly with Warehouse Health and Safety: HSE Compliance for UK E-Commerce Operations, which walks through the practical detail.