The answer is in post #17 I think....
As has been said....
Part P has NO relevance to inspection and testing.....
You need Inspection and testing qualifications and experience..
Not installation training, which may not include much practical work or on site experience.
1 hour is NOT enough time to do the job properly!
Rough ball park timescales I estimate for a domestic PIR with no prior documentation available is half hour per circuit plus another hour for for the CU and bonding investigations.
Generally half a day minimum... up to a full day for larger properties or more anomalies.
opcorn