Having now done some more research …. naturally safety is paramount for our Railways.
The specifications laid down under the Railways act/Network Rail for level crossings are being applied. My own measurements are well within their specifications.
It is the frequency of the ‘Wig/Wag’ signals (Audio) that ‘appears’ to be causing the issues.
Again I will be monitoring and trying to establish with NR whether the ‘Siren/Claxton’ can be ‘re-aligned’ away from pointing at the residential areas……