{
 "metric": "https-redirect",
 "segment": "gb-medium-large",
 "anchor": "company",
 "label": "UK medium & large companies",
 "population": "UK medium & large companies",
 "states": [
  "enforced",
  "missing"
 ],
 "quiet_failure_states": [
  "missing"
 ],
 "measurement": "Tier 3a, one GET; follow redirects and read the final scheme. Denominator: `has_web`.",
 "why_it_matters": "A valid certificate is worthless if the site still answers on port 80 — visitors and links arrive over HTTP and are never upgraded. HTTPS is \"installed\" but optional.",
 "limits": null,
 "data_tier": "http_3a",
 "population_predicate": "has_web",
 "entity_type": "domain",
 "kind": "failure",
 "latest": {
  "day": "2026-08-13",
  "n": 884,
  "qf_pct": 31.22,
  "ci": [
   28.25,
   34.35
  ],
  "dist": {
   "enforced": 68.78,
   "missing": 31.22
  },
  "snapshot": "uk-companies-house-per600-seed20260728"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 364,
   "qf_pct": 33.24,
   "ci": [
    28.6,
    38.23
   ],
   "dist": {
    "enforced": 66.76,
    "missing": 33.24
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-03",
   "n": 475,
   "qf_pct": 29.89,
   "ci": [
    25.95,
    34.16
   ],
   "dist": {
    "enforced": 70.11,
    "missing": 29.89
   },
   "snapshot": "uk-companies-house-per300-seed20260728"
  },
  {
   "day": "2026-08-04",
   "n": 878,
   "qf_pct": 31.44,
   "ci": [
    28.45,
    34.58
   ],
   "dist": {
    "enforced": 68.56,
    "missing": 31.44
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-05",
   "n": 879,
   "qf_pct": 30.94,
   "ci": [
    27.98,
    34.08
   ],
   "dist": {
    "enforced": 69.06,
    "missing": 30.94
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-06",
   "n": 883,
   "qf_pct": 31.03,
   "ci": [
    28.07,
    34.16
   ],
   "dist": {
    "enforced": 68.97,
    "missing": 31.03
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  },
  {
   "day": "2026-08-13",
   "n": 884,
   "qf_pct": 31.22,
   "ci": [
    28.25,
    34.35
   ],
   "dist": {
    "enforced": 68.78,
    "missing": 31.22
   },
   "snapshot": "uk-companies-house-per600-seed20260728"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/https-redirect/gb-medium-large"
}