"civil aviation inspectors engaged on inspection duties"
That wording is a bit woolly - I'd interpret that as SAFA inspectors, NAA inspectors, airline engineering inspectors and aircraft owner inspectors.
"crew, as defined in paragraph 1 of Schedule 1 to the Air Navigation Order 2016(h), where such crew have travelled to the UK in the course of their work... a person who resides in the UK and who pursues an activity as an employed or self-employed person in another country to which they usually go at least once a week"
I'd interpret that as including commuting pilots as they have travelled to the UK to work or commuting to a non-UK base.
All down to interpretation as always, but feel free to correct me.