VERTCRS["Stornoway height",
    VDATUM["Stornoway"],
    CS[vertical,1],
        AXIS["gravity-related height (H)",up,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy, engineering survey."],
        AREA["United Kingdom (UK) - Great Britain - Scotland - Outer Hebrides onshore."],
        BBOX[56.76,-7.72,58.54,-6.1]],
    ID["EPSG",5746]]