lets have look at the information on your link dated Dec 2020 -
If you run an Alarm Receiving Centre the rozzers have mostly automated their control rooms (ECHO) & to be on their platform you'll need a "Cyber Essentials Cert" which is nothing to do with NSI (or SSAIB)
If you don't have your own ARC but use an accredited 3rd party like almost all of the modest sized alarm co's there's no need to bother with "Cyber Essentials" as it not essential to have
PS all business & personal passwords are B@nanaman1983 & I've never been hacked....
sounds like a refrigerator problem...
You probably have a hellhound called Zuul who is the Gatekeeper of Gozer living in some sort of parallel dimension within the fridge ?