add dowlow and leaton

Dowlow/scratch.geojson

@@ -0,0 +1,8 @@
+{
+"type": "FeatureCollection",
+"name": "scratch",
+"crs": { "type": "name", "properties": { "name": "urn:ogc:def:crs:EPSG::27700" } },
+"features": [
+{ "type": "Feature", "properties": { }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 410239.037872292043176, 368230.611130823381245, 365.3846435546875 ], [ 410242.591222188784741, 368240.728885582997464, 358.41900634765625 ], [ 410236.060583105485421, 368245.938965742767323, 348.41107177734375 ], [ 410229.530403082433622, 368252.415432334004436, 351.444610595703125 ], [ 410235.634361804404762, 368258.752531360194553, 361.31884765625 ], [ 410238.428317782178055, 368241.703482492652256, 364.946044921875 ], [ 410237.393242467951495, 368236.807028167007957, 364.71893310546875 ], [ 410239.037872292043176, 368230.611130823381245, 365.3846435546875 ] ] ] } }
+]
+}