PROJCS["OSGB36_Heathrow_Airport_GIS_Grid_2026",GEOGCS["GCS_OSGB_1936",DATUM["D_OSGB_1936",SPHEROID["Airy_1830",6377563.396,299.3249646]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Local"],PARAMETER["False_Easting",7334.818],PARAMETER["False_Northing",5637.421],PARAMETER["Scale_Factor",1.000002816],PARAMETER["Azimuth",-0.29906772777781],PARAMETER["Longitude_Of_Center",-0.451656585555556],PARAMETER["Latitude_Of_Center",51.4701102238889],UNIT["Meter",1.0]]