Morning Guv,the following are seen as reportable major non-compliances and should be reported to the client but after that it's up to them what you do with your recommendations (file under "B" being the usual response!)
"1) an inadequate number of call points to comply with the recommendations of 20.2;
2) inadequate provision of fire detection to comply with the recommendations of this standard for the
Category of system that the system was designed to meet;
3) sound pressure levels that fail to comply with the recommendations of 16.2;
4) standby power supplies that fail to comply with the recommendations of 25.4. The absence of any standby power supply should be highlighted to the responsible person, as systems that incorporate no standby supply breach the Health and Safety (Safety Signs and Signals) Regulations 1996 [1];
5) cabling with fire resistance that fails to comply with the recommendations of 26.2c);
6) monitoring of circuits that fail to comply with the recommendations of 12.2.1;
7) standards of electrical safety such that the recommendations of Clause 29 are not satisfied;
exposure to, or experience of, false alarms, such as to preclude compliance with Section 3;
9) changes in the use, layout and construction of the protected premises that may impact on the
effectiveness of the system.
Serious shortcomings in cable support that could result in collapse of a significant length of cable in the event of fire might also be regarded as a major non-compliance."
To fully take the above on board you would need all documentation to be in place but this may not be the case (existing documentation as per clause 40 should be studied "where availabe")