diff --git a/digital_land/expectations/operations/dataset.py b/digital_land/expectations/operations/dataset.py
index 484b1f49..0fdb0117 100644
--- a/digital_land/expectations/operations/dataset.py
+++ b/digital_land/expectations/operations/dataset.py
@@ -320,10 +320,9 @@ def duplicate_geometry_check(conn, spatial_field: str):
                     CASE
                         WHEN pct_overlap_a > {MATCH_THRESHOLD} AND pct_overlap_b > {MATCH_THRESHOLD} THEN 'Complete match (two-way)'
                         WHEN pct_overlap_a > {MATCH_THRESHOLD} OR pct_overlap_b > {MATCH_THRESHOLD} THEN 'Single match (one-way)'
-                    ELSE 'undefined' END as intersection_type,
+                    ELSE 'Any match' END as intersection_type,
                     row_number() OVER (PARTITION BY entity_join_key ORDER BY pct_comb_overlap) as key_count
                 FROM calc
-                WHERE pct_overlap_a > 0.9 OR pct_overlap_b > 0.9 -- should this use MATCH_THRESHOLD?
                 ORDER BY entity_join_key
                 )
 
@@ -374,7 +373,18 @@ def duplicate_geometry_check(conn, spatial_field: str):
                 for row in rows
                 if row["intersection_type"] == "Single match (one-way)"
             ]
-            message = f"There are {len(complete_matches)} complete matches and {len(single_matches)} single matches in the dataset"
+
+            any_matches = [
+                {
+                    "entity_a": row["entity_a"],
+                    "organisation_entity_a": row["organisation_entity_a"],
+                    "entity_b": row["entity_b"],
+                    "organisation_entity_b": row["organisation_entity_b"],
+                }
+                for row in rows
+                if row["intersection_type"] == "Any match"
+            ]
+            message = f"There are {len(complete_matches)} complete matches, {len(single_matches)} single matches and {len(any_matches)} any matches in the dataset"
         else:
             complete_matches = [
                 {
@@ -386,6 +396,7 @@ def duplicate_geometry_check(conn, spatial_field: str):
                 for row in rows
             ]
             single_matches = []
+            any_matches = []
             message = (
                 f"There are {len(complete_matches)} complete matches in the dataset"
             )
@@ -394,10 +405,12 @@ def duplicate_geometry_check(conn, spatial_field: str):
         message = "There are no duplicate geometries/points in the dataset"
         complete_matches = []
         single_matches = []
+        any_matches = []
     details = {
         "actual": len(rows),
         "expected": 0,
         "complete_matches": complete_matches,
         "single_matches": single_matches,
+        "any_matches": any_matches,
     }
     return result, message, details
diff --git a/tests/integration/expectations/operations/test_dataset.py b/tests/integration/expectations/operations/test_dataset.py
index 533358f9..75156cdc 100644
--- a/tests/integration/expectations/operations/test_dataset.py
+++ b/tests/integration/expectations/operations/test_dataset.py
@@ -281,8 +281,11 @@ def test_duplicate_geometry_check(dataset_path):
     conn.close()
 
     assert not result
-    assert message == "There are 1 complete matches and 2 single matches in the dataset"
-    assert details["actual"] == 3
+    assert (
+        message
+        == "There are 1 complete matches, 2 single matches and 3 any matches in the dataset"
+    )
+    assert details["actual"] == 6
     assert details["expected"] == 0
 
     assert details["complete_matches"][0]["entity_a"] == 1
@@ -295,7 +298,7 @@ def test_duplicate_geometry_check(dataset_path):
     assert details["single_matches"][1]["organisation_entity_a"] == 101
     assert details["single_matches"][1]["organisation_entity_b"] == 102
 
-    # entity 4 shouldn't have any duplicates
+    # entity 4 has partial overlap with entities 1, 2 and 3 - flagged as any_match only
     assert not any(
         row["entity_a"] == 4 or row["entity_b"] == 4
         for row in details["complete_matches"]
@@ -304,6 +307,9 @@ def test_duplicate_geometry_check(dataset_path):
         row["entity_a"] == 4 or row["entity_b"] == 4
         for row in details["single_matches"]
     )
+    assert any(
+        row["entity_a"] == 4 or row["entity_b"] == 4 for row in details["any_matches"]
+    )
 
 
 def test_duplicate_geometry_check_point(dataset_path):
@@ -362,7 +368,7 @@ def test_duplicate_geometry_check_no_dupes(dataset_path):
             },
             {
                 "entity": 4,
-                "geometry": "POLYGON((1 1, 1 3, 3 3, 3 1, 1 1))",
+                "geometry": "POLYGON((3 3, 3 5, 5 5, 5 3, 3 3))",  # no overlap with entity 1
                 "organisation_entity": 103,
             },
         ]
@@ -381,5 +387,6 @@ def test_duplicate_geometry_check_no_dupes(dataset_path):
     assert message == "There are no duplicate geometries/points in the dataset"
     assert not details["complete_matches"]
     assert not details["single_matches"]
+    assert not details["any_matches"]
     assert details["actual"] == 0
     assert details["expected"] == 0