PP:
Hmmm....
40kts / 300': you must be a very good observer with vast helo experience to be so specific. Are you in the trade?
Is there a moratorium on flying over anywhere on police business, because its SUNDAY
? You must be a church goer -apologies. Perhaps on Sunday's the police aren't allowed to use their limitations to the full to prosecute a job more expeditiously?
Might I respectfully suggest that you ring their air ops unit and ask them ...directly. If you do it constructively you might even get an invitation to inspect and interrogate much more closely. Bring you colleagues with you ...you never know...
"It's an ongoing educational process, but we'll get there in the end"