All changes

pipeline/transform/postcode_boundaries/voronoi.py

@@ -2,6 +2,7 @@ from collections import defaultdict
 
 import numpy as np
 from scipy.spatial import Voronoi
+from scipy.spatial.qhull import QhullError
 from shapely import make_valid
 from shapely.geometry import MultiPolygon, Polygon
 from shapely.ops import unary_union
@@ -67,7 +68,7 @@ def compute_voronoi_regions(
 
     try:
         vor = Voronoi(all_points)
-    except Exception:
+    except (ValueError, QhullError):
         # Fallback: split boundary equally among all postcodes present
         all_pcs = list(dict.fromkeys(unique_pcs))
         if len(all_pcs) == 1: