• Belfast height to Malin Head height (1)

  EPSG:5452
  Area of use: United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• Poolbeg height (m) to Belfast height (1)

  EPSG:7966
  Area of use: United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• Poolbeg height (ft(Br36)) to Belfast height (1)

  EPSG:7967
  Area of use: United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• OSNI 1952 to WGS 84 (1)

  EPSG:1955
  Area of use: United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• ETRS89 to BI height (2)

  EPSG:9916
  Area of use: United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• ETRS89 to ETRS89 + BI height (2)

  EPSG:9917
  Area of use: United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• Irish National Grid

  EPSG:19973
  Area of use: United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• ETRS89-IRE [ETRF2000] to Belfast height (2)

  EPSG:12239
  Area of use: United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• ETRS89-IRE [ETRF2000] to ETRS89-IRE [ETRF2000] + Belfast height (2)

  EPSG:12240
  Area of use: United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• ETRS89 to Foula height (1)

  EPSG:10026
  Area of use: United Kingdom (UK) - Great Britain - Scotland - Foula onshore.
  

• ETRS89-GBR [OSNet v2009] to London Survey Grid height (1)

  EPSG:10990
  Area of use: United Kingdom (UK) - Greater London and surrounding area.
  

• London Survey Grid TM

  EPSG:10994
  Area of use: United Kingdom (UK) - Greater London and surrounding area.
  

• ETRS89-GBR [OSNet v2009] to Xrail84 (1)

  EPSG:10996
  Area of use: United Kingdom (UK) - Greater London and surrounding area.
  

• ETRS89-GBR [OSNet v2009] to ETRS89-GBR [OSNet v2009] + LSG height (1)

  EPSG:10998
  Area of use: United Kingdom (UK) - Greater London and surrounding area.
  

• TM75 to ETRS89 (1)

  EPSG:1041
  Area of use: Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• TM75 to WGS 84 (1)

  EPSG:1042
  Area of use: Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• ETRS89 to Malin Head height (1)

  EPSG:5335
  Area of use: Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• OSGB36 to WGS 84 (8)

  EPSG:5622
  Area of use: United Kingdom (UK) - Wytch Farm area - onshore and offshore.
  

• TM75 to ETRS89 (3)

  EPSG:6946
  Area of use: Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

• TM75 to WGS 84 (4)

  EPSG:6947
  Area of use: Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
  

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