bhf.org.uk

Readiness by lane

Green: bhf.org.uk. Thin bar: Fitness & Health peer median.

Priority fixes for bhf.org.uk

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Harden

   HSTS kept for at least a year

   Observed: Strict-Transport-Security was sent with a max-age of 180 days, below the one-year benchmark.

   Why it matters: HSTS tells browsers to use HTTPS for your host on every later visit, which removes the window where a first HTTP request can be intercepted.

   What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.

   On Cloudflare: Enable HSTS under SSL/TLS > Edge Certificates > HTTP Strict Transport Security and raise max-age gradually.

   43% of Fitness & Health peers do this. Limit: Read from the homepage response only; other pages or regions may send different headers.

   Guide: HTTPS and TLS Guide for Website Owners

2. Priority 2 · Accelerate

   Modern image formats in use

   Observed: The homepage had 37 images and none used WebP or AVIF.

   What to do: Serve WebP or AVIF with a JPEG or PNG fallback, either through an image CDN or by generating both formats at build time.

   On Cloudflare: Cloudflare Polish can convert images to WebP.

   45% of Fitness & Health peers do this.

   Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format

3. Priority 3 · Accelerate

   Offscreen images lazy-loaded

   Observed: The homepage had 37 images and none used loading="lazy".

   What to do: Add loading="lazy" to images below the fold. Do not lazy-load the main hero image, because that delays the largest visible element.

   68% of Fitness & Health peers do this.

   Guide: Lazy Loading Without Broken Pages

4. Priority 4 · Harden

   Certificate lifetime of 100 days or less

   Observed: The certificate from GlobalSign nv-sa had a 199-day validity period, longer than the 100-day maximum that applies from March 2027.

   What to do: Move to automated issuance and renewal now, while you still have time to test it.

   59% of Fitness & Health peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

What bhf.org.uk already does well

Practices fewer than half of Fitness & Health peers use.

• Nameservers spread across providersNameservers spread across more than one operator.9.9% of peers
• CAA records limit who can issue certificatesCAA limits issuance to amazon.com, digicert.com, globalsign.com and others.11% of peers
• Referrer-Policy setReferrer-Policy present.33% of peers

What we saw

Homepage checked

https://www.bhf.org.uk/

Homepage response

HTTP 200

TLS

TLSv1.3, HTTP/2

Certificate

GlobalSign, 199-day validity, expiring 2026-11-16

CDN or edge

Cloudflare, Azure Front Door/CDN

Platform or framework

Sitecore

DNS operators

2 self-run or other nameserver domains

HSTS

max-age 180 days, includeSubDomains, preload

DMARC policy

p=reject

Homepage HTML

120 KB, br

Images on homepage

37 (jpg 26, png 7, svg 4)

Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.

Stack and providers

Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.

All 31 checks

Select a gap for the method and fix. How each check works

Compare with other Fitness & Health sites

• carehospitals.com79
• colgate.com79
• helsenorge.no80
• mdcalc.com80
• pflege-helfer24.de80

Fitness & Health readiness benchmark