Postcode district outlook
Hosepipe ban in BB4
The hosepipe ban position for the BB4 postcode district — 1,337 live postcodes, served mostly by United Utilities — checked against the national index on 19 August 2026. This is an index check, not a prediction.
The answer for BB4
No ban listed
No Temporary Use Ban is listed in the national index for BB4. United Utilities is the primary supplier.
- Postcodes
- 1,337
- Primary supplier
- United Utilities
- Share of district
- 100%
- Sectors
- 7
Water-supply boundaries can cross postcode districts. View the official notice · Check an exact postcode for a definitive answer
Garden watering decision · BB4
Let the rain handle it
Hold offYour garden should get enough rain over the next five days. Check pots and new plants separately.
- Forecast period
- Next five days
- Forecast rain
- 32.9 mm
- Estimated requirement
- 5.5 mm
- Rain covers of need
- 100%
- Estimated remaining need
- 27.4 mm shortfall
More rain is expected than an established garden is likely to need.
Estimate for an established mixed garden border · BB4 district · updated 19 Aug, 15:00
The answer compares the latest Met Office forecast with an estimated garden water need. It is guidance, not a precise measurement, and a hosepipe ban always takes priority.
Water suppliers covering BB4
The supplier split is mapped from the district’s centroid across the published water resource zones and is a guide, not an address-level guarantee.
United Utilities
Not listed100% of mapped units · high confidence · Full status page
Water resource zones near BB4
BB4 maps to the water resource zone below. Zones are the official planning areas suppliers use to report how much water they have.
Find your exact postcode
Every live postcode in BB4 is listed below. Choose one to open its local water outlook, or use the search box to find a specific address.
Pick a postcode to open its local water outlook
BB4 0 (14 postcodes)
BB4 4 (193 postcodes)
BB4 4ABBB4 4AEBB4 4AFBB4 4AGBB4 4AHBB4 4AJBB4 4ALBB4 4ANBB4 4APBB4 4AQBB4 4ARBB4 4ASBB4 4ATBB4 4AUBB4 4AWBB4 4AXBB4 4AYBB4 4AZBB4 4BABB4 4BBBB4 4BDBB4 4BEBB4 4BFBB4 4BGBB4 4BHBB4 4BJBB4 4BLBB4 4BNBB4 4BPBB4 4BQBB4 4BSBB4 4BTBB4 4BUBB4 4BWBB4 4BXBB4 4BYBB4 4BZBB4 4DABB4 4DBBB4 4DDBB4 4DEBB4 4DFBB4 4DGBB4 4DHBB4 4DJBB4 4DLBB4 4DNBB4 4DPBB4 4DQBB4 4DRBB4 4DSBB4 4DTBB4 4DUBB4 4DWBB4 4DXBB4 4DYBB4 4DZBB4 4EABB4 4EBBB4 4EEBB4 4EFBB4 4EGBB4 4EHBB4 4ELBB4 4ENBB4 4EPBB4 4EQBB4 4ERBB4 4ESBB4 4ETBB4 4EUBB4 4EWBB4 4EXBB4 4EYBB4 4EZBB4 4FBBB4 4FEBB4 4FNBB4 4HABB4 4HBBB4 4HDBB4 4HEBB4 4HFBB4 4HGBB4 4HHBB4 4HJBB4 4HLBB4 4HNBB4 4HPBB4 4HQBB4 4HRBB4 4HSBB4 4HUBB4 4HWBB4 4HXBB4 4HZBB4 4JABB4 4JBBB4 4JDBB4 4JEBB4 4JFBB4 4JGBB4 4JHBB4 4JJBB4 4JLBB4 4JNBB4 4JPBB4 4JQBB4 4JRBB4 4JSBB4 4JTBB4 4JUBB4 4JWBB4 4JXBB4 4JYBB4 4JZBB4 4LABB4 4LBBB4 4LDBB4 4LEBB4 4LFBB4 4LGBB4 4LHBB4 4LJBB4 4LLBB4 4LNBB4 4LPBB4 4LQBB4 4LRBB4 4LSBB4 4LTBB4 4LWBB4 4LXBB4 4LYBB4 4LZBB4 4NABB4 4NEBB4 4NFBB4 4NGBB4 4NHBB4 4NJBB4 4NNBB4 4NPBB4 4NQBB4 4NRBB4 4NSBB4 4NTBB4 4NUBB4 4NWBB4 4NXBB4 4NYBB4 4NZBB4 4PABB4 4PBBB4 4PDBB4 4PEBB4 4PFBB4 4PGBB4 4PHBB4 4PLBB4 4PQBB4 4PRBB4 4PSBB4 4PTBB4 4PUBB4 4PWBB4 4PXBB4 4PYBB4 4QDBB4 4QEBB4 4QFBB4 4QGBB4 4QHBB4 4QJBB4 4QLBB4 4QNBB4 4QPBB4 4QRBB4 4QSBB4 4RABB4 4RBBB4 4RDBB4 4REBB4 4RFBB4 4RGBB4 4RHBB4 4RLBB4 4RNBB4 4RPBB4 4RQBB4 4RRBB4 4RSBB4 4RX
BB4 5 (192 postcodes)
BB4 5AABB4 5ADBB4 5AEBB4 5AFBB4 5AGBB4 5AHBB4 5ALBB4 5ANBB4 5APBB4 5ATBB4 5AUBB4 5AWBB4 5AXBB4 5AYBB4 5AZBB4 5BABB4 5BDBB4 5BEBB4 5BFBB4 5BHBB4 5BJBB4 5BLBB4 5BNBB4 5BPBB4 5BQBB4 5BSBB4 5BTBB4 5BUBB4 5BWBB4 5BZBB4 5DABB4 5DDBB4 5DEBB4 5DFBB4 5DGBB4 5DHBB4 5DJBB4 5DLBB4 5DNBB4 5DPBB4 5DQBB4 5DRBB4 5DSBB4 5DTBB4 5DUBB4 5DWBB4 5DXBB4 5DYBB4 5DZBB4 5EABB4 5EBBB4 5EDBB4 5EEBB4 5EFBB4 5EHBB4 5EJBB4 5ENBB4 5EPBB4 5EQBB4 5ERBB4 5ESBB4 5EUBB4 5EXBB4 5EYBB4 5EZBB4 5HABB4 5HBBB4 5HHBB4 5HLBB4 5HNBB4 5HQBB4 5HRBB4 5HUBB4 5HWBB4 5HXBB4 5JABB4 5JBBB4 5JDBB4 5JFBB4 5JGBB4 5JHBB4 5JLBB4 5JNBB4 5JPBB4 5JQBB4 5JTBB4 5JWBB4 5JZBB4 5LABB4 5LGBB4 5LHBB4 5LJBB4 5LLBB4 5LNBB4 5LPBB4 5LQBB4 5LRBB4 5LSBB4 5LTBB4 5LUBB4 5LWBB4 5LXBB4 5LYBB4 5LZBB4 5NABB4 5NBBB4 5NDBB4 5NEBB4 5NFBB4 5NGBB4 5NHBB4 5NJBB4 5NLBB4 5NNBB4 5NPBB4 5NQBB4 5NRBB4 5NSBB4 5NTBB4 5NWBB4 5NXBB4 5NYBB4 5NZBB4 5PABB4 5PBBB4 5PEBB4 5PGBB4 5PLBB4 5PNBB4 5PPBB4 5PQBB4 5PRBB4 5PSBB4 5PTBB4 5PUBB4 5PWBB4 5PXBB4 5PZBB4 5QBBB4 5QDBB4 5QFBB4 5QGBB4 5QJBB4 5QLBB4 5QNBB4 5QPBB4 5QQBB4 5QRBB4 5QSBB4 5QTBB4 5QUBB4 5QYBB4 5RABB4 5RBBB4 5RDBB4 5REBB4 5RFBB4 5RGBB4 5RHBB4 5RJBB4 5RQBB4 5RTBB4 5RUBB4 5RXBB4 5SJBB4 5SLBB4 5SNBB4 5STBB4 5SUBB4 5SXBB4 5SYBB4 5TABB4 5TBBB4 5TDBB4 5TEBB4 5TFBB4 5TGBB4 5THBB4 5TQBB4 5TRBB4 5TSBB4 5TTBB4 5TUBB4 5TXBB4 5TYBB4 5TZBB4 5UBBB4 5UDBB4 5UEBB4 5UHBB4 5UJBB4 5UL
BB4 6 (206 postcodes)
BB4 6AABB4 6ABBB4 6ADBB4 6AFBB4 6AGBB4 6AJBB4 6APBB4 6ARBB4 6ASBB4 6ATBB4 6AWBB4 6AXBB4 6AYBB4 6AZBB4 6BABB4 6BBBB4 6BDBB4 6BEBB4 6BGBB4 6BHBB4 6BJBB4 6BLBB4 6BNBB4 6BPBB4 6BQBB4 6BSBB4 6BUBB4 6BWBB4 6DBBB4 6DDBB4 6DFBB4 6DGBB4 6DHBB4 6DJBB4 6DLBB4 6DNBB4 6DPBB4 6DQBB4 6DRBB4 6DSBB4 6DWBB4 6DXBB4 6DYBB4 6DZBB4 6EABB4 6EBBB4 6EEBB4 6EFBB4 6EGBB4 6EHBB4 6EJBB4 6ELBB4 6ENBB4 6EQBB4 6ETBB4 6EUBB4 6EWBB4 6EXBB4 6HABB4 6HBBB4 6HDBB4 6HHBB4 6HJBB4 6HLBB4 6HPBB4 6HQBB4 6HRBB4 6HSBB4 6HTBB4 6HUBB4 6HWBB4 6HXBB4 6HYBB4 6HZBB4 6JABB4 6JBBB4 6JDBB4 6JEBB4 6JFBB4 6JGBB4 6JHBB4 6JLBB4 6JNBB4 6JQBB4 6JSBB4 6JUBB4 6JWBB4 6JXBB4 6JYBB4 6LBBB4 6LEBB4 6LFBB4 6LGBB4 6LHBB4 6LJBB4 6LLBB4 6LNBB4 6LPBB4 6LQBB4 6LRBB4 6LSBB4 6LTBB4 6LUBB4 6LXBB4 6LYBB4 6LZBB4 6NBBB4 6NDBB4 6NFBB4 6NGBB4 6NHBB4 6NJBB4 6NLBB4 6NNBB4 6NPBB4 6NQBB4 6NRBB4 6NSBB4 6NTBB4 6NUBB4 6NWBB4 6NXBB4 6NYBB4 6NZBB4 6PABB4 6PBBB4 6PDBB4 6PEBB4 6PFBB4 6PGBB4 6PHBB4 6PJBB4 6PLBB4 6PNBB4 6PPBB4 6PQBB4 6PRBB4 6PSBB4 6PTBB4 6PUBB4 6PWBB4 6PXBB4 6PYBB4 6PZBB4 6QABB4 6QDBB4 6QEBB4 6QFBB4 6QGBB4 6QHBB4 6QJBB4 6QLBB4 6QNBB4 6QPBB4 6QQBB4 6QRBB4 6QSBB4 6QUBB4 6QXBB4 6QYBB4 6QZBB4 6RBBB4 6REBB4 6RGBB4 6RHBB4 6RJBB4 6RLBB4 6RNBB4 6RPBB4 6RQBB4 6RRBB4 6RTBB4 6RWBB4 6RXBB4 6RYBB4 6RZBB4 6SABB4 6SBBB4 6SDBB4 6SEBB4 6SGBB4 6SHBB4 6SJBB4 6SLBB4 6SNBB4 6SPBB4 6SQBB4 6SRBB4 6SSBB4 6STBB4 6SUBB4 6SWBB4 6SXBB4 6TDBB4 6TFBB4 6TGBB4 6THBB4 6TJBB4 6TLBB4 6TNBB4 6TPBB4 6TQBB4 6TRBB4 6TWBB4 6UABB4 6UB
BB4 7 (229 postcodes)
BB4 7AABB4 7ABBB4 7ADBB4 7AEBB4 7AFBB4 7AGBB4 7AHBB4 7ALBB4 7APBB4 7AQBB4 7ARBB4 7ASBB4 7ATBB4 7AUBB4 7AWBB4 7AXBB4 7AYBB4 7AZBB4 7BABB4 7BBBB4 7BDBB4 7BEBB4 7BFBB4 7BGBB4 7BHBB4 7BJBB4 7BLBB4 7BNBB4 7BPBB4 7BQBB4 7BSBB4 7BTBB4 7BUBB4 7BWBB4 7BYBB4 7BZBB4 7DBBB4 7DDBB4 7DEBB4 7DFBB4 7DGBB4 7DHBB4 7DJBB4 7DLBB4 7DNBB4 7DPBB4 7DQBB4 7DRBB4 7DSBB4 7DTBB4 7DUBB4 7DWBB4 7DXBB4 7DYBB4 7DZBB4 7EABB4 7EDBB4 7EEBB4 7EFBB4 7EGBB4 7EJBB4 7ELBB4 7EPBB4 7EQBB4 7EUBB4 7EXBB4 7EZBB4 7FBBB4 7FDBB4 7FEBB4 7FFBB4 7FGBB4 7FHBB4 7GFBB4 7GUBB4 7HABB4 7HBBB4 7HGBB4 7HHBB4 7HLBB4 7HNBB4 7HPBB4 7JABB4 7JBBB4 7JEBB4 7JFBB4 7JGBB4 7JHBB4 7JJBB4 7JLBB4 7JNBB4 7JPBB4 7JQBB4 7JRBB4 7JSBB4 7JUBB4 7JXBB4 7JYBB4 7JZBB4 7LABB4 7LFBB4 7LGBB4 7LHBB4 7LJBB4 7LQBB4 7LRBB4 7LSBB4 7LUBB4 7LWBB4 7LXBB4 7LYBB4 7NABB4 7NBBB4 7NDBB4 7NEBB4 7NGBB4 7NHBB4 7NJBB4 7NNBB4 7NQBB4 7NRBB4 7NSBB4 7NTBB4 7NWBB4 7NXBB4 7NYBB4 7NZBB4 7PABB4 7PDBB4 7PEBB4 7PFBB4 7PGBB4 7PHBB4 7PJBB4 7PLBB4 7PPBB4 7PQBB4 7PSBB4 7PTBB4 7PUBB4 7PXBB4 7PYBB4 7PZBB4 7QABB4 7QBBB4 7QDBB4 7QJBB4 7QLBB4 7QNBB4 7QSBB4 7QTBB4 7QUBB4 7QXBB4 7QYBB4 7QZBB4 7RABB4 7RBBB4 7RDBB4 7REBB4 7RFBB4 7RGBB4 7RHBB4 7RJBB4 7RLBB4 7RPBB4 7RQBB4 7RRBB4 7RSBB4 7RTBB4 7RUBB4 7RWBB4 7RXBB4 7RYBB4 7RZBB4 7SABB4 7SBBB4 7SDBB4 7SEBB4 7SFBB4 7SGBB4 7SHBB4 7SJBB4 7SLBB4 7SNBB4 7SPBB4 7SQBB4 7SRBB4 7SSBB4 7STBB4 7SUBB4 7SWBB4 7SXBB4 7SYBB4 7TABB4 7TBBB4 7TDBB4 7TEBB4 7TFBB4 7TGBB4 7THBB4 7TJBB4 7TLBB4 7TNBB4 7TPBB4 7TRBB4 7TSBB4 7TTBB4 7TUBB4 7TWBB4 7TXBB4 7TYBB4 7TZBB4 7UABB4 7UBBB4 7UDBB4 7UEBB4 7UFBB4 7UGBB4 7UHBB4 7UJBB4 7ULBB4 7UNBB4 7UQBB4 7USBB4 7UUBB4 7UWBB4 7UXBB4 7UYBB4 7UZ
BB4 8 (285 postcodes)
BB4 8AABB4 8ABBB4 8ADBB4 8AGBB4 8AHBB4 8AJBB4 8ALBB4 8ANBB4 8APBB4 8AQBB4 8ARBB4 8ASBB4 8ATBB4 8AUBB4 8AWBB4 8AXBB4 8AYBB4 8AZBB4 8BABB4 8BDBB4 8BEBB4 8BFBB4 8BGBB4 8BHBB4 8BJBB4 8BLBB4 8BNBB4 8BPBB4 8BQBB4 8BSBB4 8BTBB4 8BUBB4 8BWBB4 8BXBB4 8BYBB4 8BZBB4 8DABB4 8DBBB4 8DDBB4 8DEBB4 8DFBB4 8DJBB4 8DLBB4 8DNBB4 8DPBB4 8DQBB4 8DRBB4 8DSBB4 8DTBB4 8DUBB4 8DWBB4 8DXBB4 8DYBB4 8EBBB4 8EDBB4 8EEBB4 8EGBB4 8EJBB4 8ELBB4 8ENBB4 8EPBB4 8EQBB4 8ERBB4 8ESBB4 8ETBB4 8EUBB4 8EWBB4 8EXBB4 8EYBB4 8EZBB4 8FABB4 8FBBB4 8FDBB4 8FEBB4 8FFBB4 8FGBB4 8FHBB4 8FJBB4 8FLBB4 8FNBB4 8FQBB4 8FRBB4 8FSBB4 8FTBB4 8FUBB4 8FWBB4 8FXBB4 8FYBB4 8HABB4 8HBBB4 8HDBB4 8HEBB4 8HFBB4 8HGBB4 8HHBB4 8HJBB4 8HLBB4 8HNBB4 8HPBB4 8HQBB4 8HRBB4 8HSBB4 8HTBB4 8HUBB4 8HWBB4 8HXBB4 8HYBB4 8HZBB4 8JABB4 8JBBB4 8JDBB4 8JEBB4 8JFBB4 8JGBB4 8JHBB4 8JJBB4 8JLBB4 8JNBB4 8JPBB4 8JQBB4 8JSBB4 8JTBB4 8JUBB4 8JWBB4 8JXBB4 8JYBB4 8JZBB4 8LABB4 8LBBB4 8LDBB4 8LFBB4 8LGBB4 8LHBB4 8LJBB4 8LLBB4 8LPBB4 8LQBB4 8LRBB4 8LSBB4 8LTBB4 8LUBB4 8LWBB4 8LXBB4 8LYBB4 8LZBB4 8NABB4 8NBBB4 8NDBB4 8NEBB4 8NFBB4 8NGBB4 8NHBB4 8NJBB4 8NLBB4 8NNBB4 8NPBB4 8NQBB4 8NRBB4 8NSBB4 8NTBB4 8NUBB4 8NWBB4 8NXBB4 8NYBB4 8NZBB4 8PABB4 8PBBB4 8PDBB4 8PEBB4 8PGBB4 8PHBB4 8PJBB4 8PLBB4 8PNBB4 8PPBB4 8PQBB4 8PRBB4 8PSBB4 8PTBB4 8PUBB4 8PWBB4 8PXBB4 8PYBB4 8PZBB4 8QABB4 8QBBB4 8QDBB4 8QEBB4 8QGBB4 8QHBB4 8QJBB4 8QLBB4 8QNBB4 8QPBB4 8QQBB4 8QRBB4 8QSBB4 8QTBB4 8QUBB4 8QWBB4 8QXBB4 8QYBB4 8QZBB4 8RABB4 8RBBB4 8RDBB4 8REBB4 8RFBB4 8RGBB4 8RHBB4 8RJBB4 8RLBB4 8RNBB4 8RPBB4 8RQBB4 8RRBB4 8RSBB4 8RTBB4 8RWBB4 8RXBB4 8RYBB4 8RZBB4 8SABB4 8SBBB4 8SDBB4 8SEBB4 8SFBB4 8SGBB4 8SHBB4 8SJBB4 8SLBB4 8SNBB4 8SPBB4 8SQBB4 8SRBB4 8SSBB4 8STBB4 8SUBB4 8SWBB4 8SXBB4 8SYBB4 8SZBB4 8TABB4 8TBBB4 8TDBB4 8TEBB4 8TFBB4 8TGBB4 8THBB4 8TJBB4 8TLBB4 8TNBB4 8TPBB4 8TQBB4 8TTBB4 8TUBB4 8TWBB4 8TXBB4 8TYBB4 8TZBB4 8UABB4 8UBBB4 8UDBB4 8UEBB4 8UFBB4 8UGBB4 8UHBB4 8ULBB4 8UNBB4 8UPBB4 8UQBB4 8URBB4 8USBB4 8UTBB4 8UWBB4 8UXBB4 8XGBB4 8XHBB4 8XJBB4 8XLBB4 8XNBB4 8XPBB4 8XQBB4 8XRBB4 8XS
BB4 9 (218 postcodes)
BB4 9AABB4 9ABBB4 9ADBB4 9AEBB4 9AFBB4 9AGBB4 9AHBB4 9AJBB4 9ALBB4 9ANBB4 9APBB4 9AQBB4 9ARBB4 9ATBB4 9AUBB4 9AWBB4 9AZBB4 9BABB4 9BBBB4 9BDBB4 9BEBB4 9BFBB4 9BHBB4 9BJBB4 9BLBB4 9BNBB4 9BPBB4 9BQBB4 9BSBB4 9BTBB4 9BUBB4 9BWBB4 9BXBB4 9BYBB4 9BZBB4 9DABB4 9DBBB4 9DDBB4 9DEBB4 9DFBB4 9DGBB4 9DHBB4 9DJBB4 9DNBB4 9DPBB4 9DQBB4 9DRBB4 9DSBB4 9DTBB4 9DUBB4 9DWBB4 9DXBB4 9DYBB4 9DZBB4 9EABB4 9EBBB4 9EDBB4 9EEBB4 9EFBB4 9EGBB4 9EHBB4 9EJBB4 9ELBB4 9ENBB4 9EPBB4 9ERBB4 9ESBB4 9ETBB4 9EUBB4 9EWBB4 9EXBB4 9EYBB4 9EZBB4 9FDBB4 9HABB4 9HBBB4 9HFBB4 9HGBB4 9HHBB4 9HQBB4 9HRBB4 9HUBB4 9HYBB4 9JABB4 9JBBB4 9JDBB4 9JEBB4 9JFBB4 9JGBB4 9JHBB4 9JJBB4 9JLBB4 9JNBB4 9JQBB4 9JRBB4 9JSBB4 9JTBB4 9JUBB4 9JWBB4 9JXBB4 9JYBB4 9JZBB4 9LABB4 9LBBB4 9LDBB4 9LEBB4 9LFBB4 9LGBB4 9LHBB4 9LLBB4 9LNBB4 9LPBB4 9LQBB4 9LRBB4 9LSBB4 9LTBB4 9LUBB4 9LWBB4 9LZBB4 9NABB4 9NBBB4 9NDBB4 9NEBB4 9NFBB4 9NGBB4 9NHBB4 9NJBB4 9NLBB4 9NQBB4 9NSBB4 9NTBB4 9NXBB4 9NYBB4 9NZBB4 9PABB4 9PBBB4 9PDBB4 9PEBB4 9PFBB4 9PGBB4 9PJBB4 9PLBB4 9PNBB4 9PPBB4 9PQBB4 9PRBB4 9PSBB4 9PTBB4 9PUBB4 9PWBB4 9PXBB4 9PZBB4 9QABB4 9QBBB4 9QDBB4 9QFBB4 9QGBB4 9QNBB4 9QPBB4 9QRBB4 9QSBB4 9QTBB4 9QUBB4 9QWBB4 9QXBB4 9QYBB4 9QZBB4 9RABB4 9RBBB4 9REBB4 9RGBB4 9RJBB4 9RLBB4 9RRBB4 9RSBB4 9RTBB4 9RUBB4 9RWBB4 9RXBB4 9RYBB4 9RZBB4 9SABB4 9SBBB4 9SDBB4 9SJBB4 9SLBB4 9SNBB4 9SPBB4 9SRBB4 9SSBB4 9STBB4 9SUBB4 9SXBB4 9SYBB4 9SZBB4 9TABB4 9TBBB4 9TDBB4 9TEBB4 9TFBB4 9TGBB4 9THBB4 9TJBB4 9TLBB4 9TQBB4 9TRBB4 9TSBB4 9TTBB4 9TWBB4 9TYBB4 9TZBB4 9UABB4 9UDBB4 9UEBB4 9UFBB4 9UGBB4 9UHBB4 9UQ
Local reservoir outlook
The most recent published reservoir readings for the suppliers serving this district:
Carlisle
59.0% storage · observed 9 August 2026 · Detail
Dee & Vyrnwy Reservoirs
66.5% storage · observed 9 August 2026 · Detail
Haweswater & Thirlmere
55.2% storage · observed 9 August 2026 · Detail
Pennine Sources
54.6% storage · observed 9 August 2026 · Detail
Regional Total
60.2% storage · observed 9 August 2026 · Detail
Hosepipe ban rules for BB4
The rules that apply depend on your supplier’s notice. The general position: watering cans and buckets stay allowed, while a hosepipe connected to the mains is restricted during a Temporary Use Ban.
This is an index check, not a prediction. The postcode inventory comes from ONSPD Open Geography (onspd-latest-postcode-centroids), and the supplier split is mapped from district centroids. For a legally reliable answer for your address, use the exact-postcode checker or the supplier’s own checker.