The verdict in three sentences
WCAG 2.1 level AA is a legal expectation for UK public sector websites (Public Sector Bodies Accessibility Regulations) and a growing requirement for large firms under the Equality Act: audit, accessibility statement and a remediation plan are expected. In 2026 in London, budget GBP 4,000 to 12,000 for the audit and GBP 6,500 to 24,000 for remediation, over a 6 to 12 week timeline. Non-compliance exposes you to enforcement, legal claims and reputational damage, plus the exclusion of users.
What WCAG compliance requires in 2026
Compliance is not just an audit: it is a set of enforceable deliverables and a lasting commitment.
| Deliverable | Content | Mandatory |
|---|---|---|
| WCAG audit | Testing success criteria on a page sample | Yes |
| Accessibility statement | Publicly displayed conformance level | Yes |
| Multi-year plan | 3-year accessibility roadmap | Yes (public sector) |
| Annual action plan | Current year actions | Yes (public sector) |
| Remediation | Technical and editorial fixes | Yes |
| Contributor training | Producing accessible content | Recommended |
Levels A / AA and costs per batch
WCAG targets level AA. Fixes break into batches, from the most critical (blocking for screen reader users) to the finest.
| Batch | Example criteria | Level | Estimated cost |
|---|---|---|---|
| Structure & navigation | Headings, landmarks, tab order | A/AA | GBP 1,600-4,000 |
| Alternative content | Image alt, transcripts, captions | A | GBP 1,200-3,200 |
| Contrast & colour | 4.5:1 ratio, info not by colour alone | AA | GBP 800-2,400 |
| Forms | Labels, error messages, help | A/AA | GBP 1,600-4,800 |
| Interactive components | ARIA, visible focus, keyboard | AA | GBP 2,400-6,400 |
| PDF documents | Tagged accessible PDFs | A/AA | GBP 800-4,000 |
Mini case study
Mr Clarke, digital lead at a UK public body, runs a citizen services site at 25,000 visits/month. WCAG audit: GBP 7,200, initial result 48% conformance. Remediation (5 priority batches): GBP 16,800, over 10 weeks, reaching 92% conformance. Total investment: GBP 24,000. Against enforcement and legal-claim exposure, plus the exclusion of roughly 15% of users with disabilities, compliance is both a legal obligation and a net risk reduction, without counting the UX improvement for all users.
FAQ
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What does WCAG remediation cost in London in 2026?
Budget GBP 4,000 to 12,000 for the audit and GBP 6,500 to 24,000 for remediation, depending on site size and starting conformance. A small site already 70% conformant costs less than the top of the range.
What is the risk of non-compliance?
Under the accessibility regulations and Equality Act, you face enforcement, legal claims and reputational damage. There is also the exclusion of users with disabilities and lost business.
What deliverables are mandatory?
The WCAG audit, the public accessibility statement with conformance level, and (for public sector) a multi-year plan and annual action plan. These documents are enforceable.
How long does remediation take?
Budget 6 to 12 weeks depending on the number of batches to fix. Interactive components (ARIA, keyboard) and PDFs are often the longest workstreams.
Which level should we target, A or AA?
WCAG requires level AA (WCAG 2.1). Level A alone does not meet the legal expectation; targeting AA from the start avoids a costly second project.
Let's scope your project. Send us your URL and current statement and we will define the WCAG audit, priority batches and remediation budget. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
