Ulez has been a breath of fresh air for London | Letters
Sadiq Khan’s ultra-low emission zone in London is celebrated by Lorna Henderson, George Coleby and Leonard Neamtu after a study showed its health benefits for children In light of the astonishing results achieved in lowering air pollution by the introduction of the ultra-low emission zone (Ulez) in London by Sadiq Khan (Ulez led to better lung size and function among London children, study finds, 18 August), should w
Open original article- Ledger record
- #2738
- First seen
- 25 Aug 2026, 16:57 UTC
- Last checked
- 26 Aug 2026, 16:14 UTC
- Version history
- 1 version
- Current fingerprint
1525a589565d...21b7e8
Publisher layer
Recorded article metadata
- Publisher
- The Guardian
- Country
- England / United Kingdom
- Source published
- 25 Aug 2026, 16:44 UTC
- Source updated
- No update timestamp supplied
- Byline
- Guardian Staff
- Section
- Air pollution
Sadiq Khan’s ultra-low emission zone in London is celebrated by Lorna Henderson, George Coleby and Leonard Neamtu after a study showed its health benefits for children In light of the astonishing results achieved in lowering air pollution by the introduction of the ultra-low emission zone (Ulez) in London by Sadiq Khan (Ulez led to better lung size and function among London children, study finds, 18 August), should w
Change layer
Observed version timeline
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1
Ulez has been a breath of fresh air for London | Letters
Sadiq Khan’s ultra-low emission zone in London is celebrated by Lorna Henderson, George Coleby and Leonard Neamtu after a study showed its health benefits for children In light of the astonishing results achieved in lowering air pollution by the introduction of the ultra-low emission zone (Ulez) in London by Sadiq Khan (Ulez led to better lung size and function among London children, study finds, 18 August), should w
Changed fieldstitlebylinedescriptionTextcontentTextsourcePublishedAtsourceUpdatedAtsectionimageUrltags- Version SHA-256
1525a589565d...21b7e8- Capture SHA-256
d811e6bc963e...0d7744
Interpretation layer
Labels with declared origins
Publisher categories are copied from source metadata. Machine signals report observable wording or format and do not determine truth, intent, ethics, or wrongdoing.
- machine content-type Reported news observable-rules-v1 / 70% rule confidence
- publisher category Air pollution rss-category
- publisher category Children rss-category
- publisher category Children's health rss-category
- publisher category Climate crisis rss-category
- publisher category Environment rss-category
- publisher category Health rss-category
- publisher category London rss-category
- publisher category Politics rss-category
- publisher category Sadiq Khan rss-category
- publisher category Transport rss-category
- publisher category UK news rss-category
Public response layer
Reception snapshots
Comment counts and samples remain absent until a lawful, source-specific capture method is reviewed. Absence is recorded instead of estimated.
Evidence layer
Capture provenance
- Capture ID
- #2444
- Observed
- 25 Aug 2026, 16:57 UTC
- HTTP result
- 200 / parsed
- Raw payload
- 476,241 bytes, private gzip evidence
- Collector
- news-ledger/0.1
- Public boundary
- metadata and excerpt