diff --git a/presentation-20180904-basr.html b/presentation-20180904-basr.html
index 0f5828d..d81d2be 100644
--- a/presentation-20180904-basr.html
+++ b/presentation-20180904-basr.html
@@ -168,6 +168,9 @@ Of 46,057 places of worship in the UK:
 2476 Catholic Churches
 3584 Methodist churches.
 
+Of 46,057 places of worship in the UK:
+~30,000 = not categorised
+
 ---
 
 So who cares?