Crash Location Small Area
From Wiki
Crash Location Small Area is a dimension containing the Small Area where each crash took place. This location is based on the NSGR of each crash as reported in in STATS19 returns. It is independent of the Local Authority District field included in the attendant circumstances of each crash.
The location is further identified using the structure defined in the MAST Geography hierarchy, although it a small number of crashes have reported NSGRs which place them in a different area than the Crash Location dimension.