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nsi.org.uk

https://nsi.org.uk· First analyzed 27 May 2026· Updated 27 May 2026
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nsi.org.uk
Desktop screenshot of nsi.org.uk
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Hosting Provider

Sucuri

IP Address

192.124.249.112

Site Location

🇬🇧 United Kingdomvia tld

Server Location

🇺🇸 Menifee, United States

ASN

AS30148

Organization

Sucuri

Server

Sucuri/Cloudproxy

CDN

Sucuri

WAF

Sucuri

Nameservers

dns3.uk2.net.dns2.uk2.net.dns1.uk2.net.

Performance

98

Core Web Vitals

Weight

First Contentful Paint
912 ms10%
Speed Index
1.2 s10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
19.9 MB
104 requests

Image Optimization

Lazy LoadResponsive
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
WordPress
cms
Beaver Builder Child Themev1.0Custom
by The Beaver Builder Team
View Theme

Technology Stack

22 Technologies Detected

Plugins

10
Beaver Builder
Bb Repeater Field
Contact Form 7
Cookie Law InfoExpanding ArchivesWpcf7 Redirect
TablePress
Cf7 Conditional Fields
Yoast SEO
Beaver Builder

Libraries

2
jQuery
jQuery UI

CSS Frameworks

2
Bootstrap
Tailwind CSS

Analytics

2
Google Analytics
Google Analytics 4

Security

2
Sucuri
reCAPTCHA

Icon Libraries

1
Font Awesome

Fonts

1
Google Fonts

Tag Managers

1
Google Tag Manager

Marketing

1
HubSpot

SEO Analysis

A+91/100
27
4
0
Meta Tags14/15
Content11/12
Headings6/8
Technical24/25
E-E-A-T5/7
Images6/7
Links5/5
URL5/5
Social4/5
Freshness4/4
Mobile4/4
Indexability3/3
N
nsi.org.uknsi.org.uk

NSI - Certification for security and fire protection companies

The UK's top security and fire safety companies are approved by the National Security Inspectorate (NSI). Look for the NSI Gold & Silver hallmarks of approval

Title Length62 chars

Recommended: 50-60 chars (~369px / 580px)

Description Length158 chars

Recommended: 120-160 chars

Issues (0)

    4 issues found

    Upgrade to view details

    Crawlability

    Sitemap

    Type: index

    7 URLs

    7 sub-sitemaps

    robots.txt

    3 rules

    Sitemap reference found

    Allows all crawlers

    Local SEO

    Local Search Readiness

    22/100
    Needs Work
    6 11

    Sponsored

    AI & LLM Readiness

    C67/100
    Bot Access
    20/25
    Machine Read.
    17/25
    Schema Data
    12/25
    Citation
    18/25

    AI Bot Access

    14/14 accessible
    AI Search
    OAI-SearchBot
    PerplexityBot
    Claude-SearchBot
    Gemini-Deep-Research
    DuckAssistBot
    Training
    GPTBot
    ClaudeBot
    Google-Extended
    Meta-ExternalAgent
    Bytespiderinfo
    Amazonbot
    Applebot-Extended
    CCBotinfo
    Fetch
    ChatGPT-User

    Machine Readability

    llms.txtinvalid
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    nav
    Text ratio:7%
    Words:1,461
    Token eff.:Optimal
    Sections/1K:11.6
    Depth:1/5

    Structured Data

    5 JSON-LD
    Article×1.2microdataPerson×1.3microdataOrganization×1.1WebSiteBreadcrumbListSearchAction
    sameAs entity links

    Citation Readiness

    Opening Summary20w
    Descriptive Headingsavg 4.7w
    Canonical URL
    Open Graph3/3
    Twitter Card1/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (8)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    Sponsored

    Accessibility

    WCAG 2.1 Compliance

    Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.
    B
    77/100
    10
    Passed
    3
    Critical
    1
    Warnings
    Images & Alt Text
    15/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    18/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    10/15
    Verifies form fields have labels, error messages are clear, and inputs are properly associated.
    Color & Contrast
    15/15
    Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.
    Keyboard & Focus
    13/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    6/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 recommendations
    • •Accessibility recommendation preview...
    Upgrade to view recommendations

    Carbon Footprint

    SWDM v4 · Eco-Score

    Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.
    18/100
    F
    2.52 g
    CO₂e / view
    19.9 MB
    Page Weight
    5%
    Cleaner Than
    New Visitor
    2.89 g
    vs
    Returning (cached)
    1.44 g
    Annual (10K/mo)
    303.0 kg
    Emission Segments
    Data Center
    564 mg
    Network
    606 mg
    Device
    1.35 g
    Resource Breakdown
    JavaScript
    767.7 KB
    Images
    747.2 KB
    CSS
    4.0 MB
    Fonts
    2.7 KB
    HTML
    32.4 KB
    Other
    14.4 MB
    Green Hosting Not Verified
    Sucuri
    9 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    A

    Security Score

    86%Very Good
    Interactive

    HTTPS

    WAF

    41d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Starfield Technologies, Inc.

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2+H3

    Valid From

    09.04.2026

    Valid Until

    08.07.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    nsi.org.ukwww.nsi.org.uk

    SHA-256 Fingerprint

    D6:AC:34:12:C4:AD:BB:7B:9A:20:C7:22:80:DC:3A:36:43:97:AA:A6...

    Upgrade to view header details

    HTTP Headers

    Developer Console

    alt-svc
    h3=":443"; ma=2592000, h3-29=":443"; ma=2592000, h3-Q050=":4...
    content-encoding
    ⚡ Brotli(br)
    content-security-policy
    upgrade-insecure-requests;, upgrade-insecure-requests
    content-type
    text/html; charset=UTF-8
    date
    Wed, 27 May 2026 19:41:46 GMT
    link
    <https://www.nsi.org.uk/>; rel=shortlink
    Good Warning Issue

    Email Infrastructure

    Mimecast

    Score

    90

    SPF
    DKIM
    DMARC

    DMARC Policy

    None (Monitor Only)

    MX Records (2)

    eu-smtp-inbound-2.mimecast.com
    eu-smtp-inbound-1.mimecast.com

    Domain Information

    nsi.org.uk

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookiebot

    Cookie Consent Banner
    Cookiebot
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Cookie consent banner detected
    CMP: Cookiebot
    Privacy policy page linked

    Mobile Compatibility

    Viewport & Responsive Test

    Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.
    B
    74/100
    Mobile Friendly1 breakpoint
    Viewport Meta
    The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.
    Responsive Design
    Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.
    Touch Icons
    Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.
    Readable Font Size
    Base font size should be at least 16px on mobile to ensure text is readable without zooming.
    Relative Units
    Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.
    No H-Scroll Risk
    No elements wider than the viewport that would cause horizontal scrolling on mobile devices.
    Tap Targets OK
    Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.
    No Fixed Widths
    No elements with fixed pixel widths that could overflow on smaller screens and break the layout.
    Viewport
    width=device-width, initial-scale=1.0
    1 recommendation
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    Titillium Web + roboto

    WCAG Partial
    78/100
    Readability
    /30
    25/30

    16px · LH 1.40

    Hierarchy
    /20
    17/20

    4x ratio · ✓ H1→H6

    WCAG
    /25
    15/25

    1:1 min contrast

    Performance
    /25
    21/25

    System fonts

    Heading Font

    Titillium Web

    Sans65px

    Body Font

    roboto

    Sans16px

    Contrast Ratio

    1:1

    11 issues

    Reading Comfort

    ~42 CPL

    Narrow lines
    65px
    h1
    50px
    h2
    23px
    h3
    16px
    h4
    16px
    p

    ✅ Excellent readability: 16px body text is ideal for all devices.

    ✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

    ❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 11 elements below WCAG AA threshold (min 1.0:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ Strong hierarchy: Headlines are 4.0x larger than body text.

    GGoogle FontsBuy on MyFontsFluid Type (rem)Flesch 0

    Color Palette

    8 unique colors
    4.27:1 AA Large Light
    #7f7f7f
    Other· 25.799999999999997%
    #1a1c1d
    Text· 7.2%
    #5e534d
    Primary· 29.599999999999998%
    #4b2c27
    Secondary· 7.4%

    Business & Marketing Stack

    5 Tools Detected

    Enterprise

    CRM Systems

    1
    HubSpotMid-Market

    Customer Relationship Management platforms

    Behavior Analytics

    2
    Google Tag ManagerFree
    Google AnalyticsFree

    User behavior and product analytics

    Privacy & Cookies

    2
    CookiebotMid-Market
    GDPR Cookie ConsentFree

    Cookie consent and privacy compliance tools

    3

    Categories

    5

    Total Tools

    0

    Enterprise

    2

    Mid-Market

    Assessment: Sophisticated marketing and sales technology infrastructure

    Sponsored

    Scripts & Styles

    30 Resources

    20
    Scripts
    10
    Styles
    5
    Async
    1
    Defer

    Top Script Sources

    nsi.org.uk(7)googletagmanager.com(3)maps.googleapis.com(2)js-eu1.hs-scripts.com(1)google-analytics.com(1)

    Website Identity

    NSI

    NSI

    Organization

    The UK's top security and fire safety companies are approved by the National Security Inspectorate (NSI). Look for the NSI Gold & Silver hallmarks of approval

    www.nsi.org.uk/
    Location detected: 🇬🇧 United Kingdomvia tld
    📧 Mimecasten-GB

    Sponsored

    Last analyzed: 27 May 2026 at 19:42

    Historical Analysis & Change Tracking