n_ easy, suggest the key thing is not to overwork a clause such as this one and try to twist one's brain into applying it, when
generally speaking it can be safely ignored. Advising service businesses is 90% of what I do as a consultant, and over many years of doing this in many many different types of service businesses,
in most cases this clause simply doesn't apply. On the odd occasion, it does. But it's almost always more applicable in a 'physical widget' type business.
... my business where the goods come in for service and may have documentation accessories etc that all has to be accounted for from beginning to end.
Yes, you're right that is important and it applies. I do tend to agree with Jim's advice in general about mostly ignoring 7.5.5 for service companies, as explained above, but yes, there are examples, such as this one you give. But then, a system where physical goods are taken/left for servicing is pretty much a no-brainer to apply the requirements of this clause surely?
This company enters a premise and is expected to leave it without doing anything but improve it ...
Yup. Which can be happily done without excluding the clause, but by pretty much ignoring it, as Jim suggests.