• OSGB36 National Highways C19H1

  ESRI:112100
  Area of use: UK - Highways England - C19
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• OSGB36 National Highways C19H2

  ESRI:112101
  Area of use: UK - Highways England - C19
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• OSGB36 / British National Grid - United Kingdom Ordnance Survey

  EPSG:27700 with transformation: 7710
  Area of use: United Kingdom (UK) (accuracy: 1.0)
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• OSGB36 / Heathrow Airport GIS Grid 2026

  EPSG:11390 with transformation: 7710
  Area of use: United Kingdom (UK) (accuracy: 1.0)
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