Layer Estimates:

Layer: StA_1mDTM_poly (ID:0)
Count: 43993
Extent:

XMin: 344776.7151
YMin: 716650.626499999
XMax: 351043.871200001
YMax: 721950.155600001
Spatial Reference: PROJCS["OSGB_1936_British_National_Grid",GEOGCS["GCS_OSGB_1936",DATUM["D_OSGB_1936",SPHEROID["Airy_1830",6377563.396,299.3249646]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["false_easting",400000.0],PARAMETER["false_northing",-100000.0],PARAMETER["central_meridian",-2.0],PARAMETER["scale_factor",0.9996012717],PARAMETER["latitude_of_origin",49.0],UNIT["Meter",1.0]]