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Security report for jewson.co.uk

STARK Building Materials UK Limited Trading as Jewson · Retail · United Kingdom

Medium risk. 3 critical or high findings in GDPR outside view and SSL/TLS.

Security score

69/100

Risk levelMedium

0–100, higher is better. How it is calculated

Jewson, operated by STARK Building Materials UK Limited, is a leading UK builders merchants chain offering a wide range of building materials, timber, tools, and equipment hire services. With over 400 branches nationwide, Jewson serves trade professionals and self-builders, providing comprehensive product categories and project support tools such as estimators and account management. The website reflects a mature digital presence with a professional design, clear navigation, and extensive product information. Technically, the site leverages SAP Hybris CMS, Adobe Launch for tag management, and integrates modern analytics and marketing tools, ensuring good performance and mobile optimization. Security posture is strong with HTTPS enforcement, CSRF protection, and cookie consent mechanisms, although explicit security policies and vulnerability disclosures are not found. Overall, Jewson's website demonstrates a high level of business credibility, technical maturity, and compliance with privacy regulations, supporting its market position as a trusted supplier in the UK construction sector.

Scanned

NIS2 and GDPR posture

GDPR outside view
60/ 100 · Medium
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

3 findings rated critical or high. Fix these first.

  1. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • Critical

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  2. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • Critical

      No HTTPS Encryption

      Website does not use HTTPS encryption, making all data transmission vulnerable to interception

      What to do: Implement SSL/TLS certificate and redirect all HTTP traffic to HTTPS

Need hands-on remediation? Email guard@offseq.com

Keep watching jewson.co.uk

This scan found 11 issues across 5 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

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  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
0
Security headers
100
Email security
85
DNS health
70
Network security
100
GDPR outside view
60
Average
69

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Jewson holds a dominant position in the UK builders merchants market, targeting trade professionals and self-builders with a broad product portfolio and services including tool hire and project estimation. The business model focuses on retail and trade supply with a large physical branch network complemented by an e-commerce platform. The company benefits from its parent company STARK Building Materials UK Limited, enhancing its operational scale and legitimacy. The website's integration with multiple marketing and analytics platforms indicates a data-driven approach to customer engagement and growth. Partnerships and subsidiary relationships appear limited but well-aligned with core business operations. The presence of detailed legal and compliance information supports trust and regulatory adherence.

Security posture

The website exhibits a mature security posture with enforced HTTPS, presence of security headers, and secure form handling including CSRF tokens and password complexity enforcement. Cookie consent is managed via Civic CookieControl, supporting GDPR compliance. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of a public security policy or incident response contact limits transparency in security governance. The use of Adobe Launch and Incapsula WAF provides additional layers of security and monitoring. Recommendations include publishing explicit security policies, adding vulnerability disclosure mechanisms, and continuous monitoring of third-party scripts to maintain security integrity.

Recommendations

  1. Publish a dedicated security policy page including incident response contacts to enhance transparency.
  2. Implement and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  3. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  4. Enhance Content Security Policy headers with reporting endpoints to monitor and prevent script-based attacks.
  5. Ensure all external links and resources use HTTPS to maintain secure user experience.

Contact details published on the site

Addresses
Legal name
STARK Building Materials UK Limited
VAT number
GB 394 1212 63
Registration number
01647362
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
STARK Building Materials UK Limited Trading as Jewson
Description
The UK's leading chain of builders merchants. Supplier of building materials & equipment, supplies, tools & timber with over 400 branches across the UK.
Key services
Building materials supply, Timber supply, Tool hire, Project estimator, Account management
Content quality
good
Branding
consistent

Technology

Stack
Adobe Launch (Adobe DTM), Google Tag Manager, Google Analytics 4, Civic CookieControl, jQuery (implied by usage of $ and plugins), Polyfills for HTML5 picture element, Typekit fonts
Frameworks
Hybris (SAP Commerce Cloud)
Platforms
SAP Commerce Cloud
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • CSRF tokens in forms
  • Content Security Policy likely via Adobe Launch
  • Cookie consent management implemented
  • No exposed sensitive data in HTML
  • Password complexity enforced in forms

Analytics and tracking

Services
Google Analytics 4, Adobe Analytics (via Adobe Launch)
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Google Ads (AW-758687637), Twitter Ads, Facebook Ads
Tracking pixels
Google Analytics 4, Facebook Pixel, Twitter Universal Website Tag
Marketing tools
Adobe Launch, Civic CookieControl
Transparency
good

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is fully accessible with no WAF blocking or challenge
  2. Comprehensive business and legal information present
  3. Strong use of modern analytics and marketing tools
  4. Good implementation of privacy and cookie consent mechanisms
  5. No visible security vulnerabilities or exposed sensitive data
  6. Site uses SAP Hybris platform with Adobe Launch for tag management
  7. Social media presence on Instagram, Twitter, Facebook
  8. Multiple product categories and detailed navigation structure
  9. Consistent branding and professional design
Technical notes

Notes

Jewson's website is built on the SAP Hybris platform, leveraging Adobe Launch for tag management and integrating Google Analytics 4 and social media tracking pixels for marketing insights. The site uses modern web technologies including responsive design, HTML5 picture elements with polyfills, and Typekit fonts for typography. Hosting and security are managed via Incapsula WAF, providing protection against common web threats. Performance is moderate with deferred script loading and preloading of critical CSS. Accessibility features such as ARIA roles and screen reader labels are implemented, supporting inclusive user experience. SEO is supported by canonical tags, meta descriptions, and structured data in JSON-LD format. Overall, the technical infrastructure is robust, scalable, and aligned with enterprise e-commerce standards.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

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