UB postcode area
postcode area within the United Kingdom
The UB postcode area, also known as the Southall postcode area, is a group of eleven postcode districts in England, within six post towns. These cover parts of western and north-western Greater London, plus a very small part of Buckinghamshire. Despite being known as the Southall postcode area, the letters UB are an abbreviation of Uxbridge.
The main sorting office is in Greenford (Green Park Way) and the area served includes much of the London Borough of Hillingdon and the western part of the London Borough of Ealing, while the western part of UB9 covers a small part of Buckinghamshire, the southern part of UB2 covers a very small part of the London Borough of Hounslow, and a very small part of UB5 lies within the London Borough of Harrow.
Begin with the source’s own compact description: “UB postcode area” is postcode area within the United Kingdom. The dossier treats that line as a proposition to test through postcode, area and within, not as a finished interpretation.
Why this record matters
The phrase “postcode area within the United Kingdom” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jan 29, 2026. The linked authority identifier is Q7863897. None of the 0 selected statements returned an explicit reference.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “UB postcode area” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.