Please see below detailed descriptions of primary and secondary srids, and envelope for the layer.
<table border='1'>
<tr>
<th>SRID</th>
<th>DESCRIPTION</th>
<th>AUTH_NAME</th>
<th>AUTH_SRID</th>
<th>FALSEX</th>
<th>FALSEY</th>
<th>ZUNITS</th>
<th>FALSEM</th>
<th>MUNITS</th>
<th>SRTEXT</th>
<th>OBJECT_FLAGS</th>
<th>XYCLUSTER_TOL</th>
<th>ZCLUSTER_TOL</th>
<th>MCLUSTER_TOL</th>
</tr>
<tr>
<td>26</td>
<td></td>
<td></td>
<td>0</td>
<td>-200000.000698492</td>
<td>-.000698491931937391</td>
<td>1</td>
<td>0</td>
<td>1</td>
<td>PROJCS["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",0.999601
272],PARAMETER["Latitude_Of_Origin",49.0],UNIT["Meter",1.0]]</td>
<td>0</td>
<td></td>
<td></td>
<td></td>
</tr>
<tr>
<td>41</td>
<td></td>
<td></td>
<td></td>
<td>-5220399.99983331</td>
<td>-15524399.9997961</td>
<td>4</td>
<td>0</td>
<td>1</td>
<td>PROJCS["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",0.999601
272],PARAMETER["Latitude_Of_Origin",49.0],UNIT["Meter",1.0]]</td>
<td>1</td>
<td>.00139698386387479</td>
<td>2</td>
<td>2</td>
</tr>
</table>
Is that sufficient?