Many thanks for the responses. I'll have a look for the Safety Sense leaflet.
As said, the journeys are perfectly feasible by road, rail, ferry etc. The main benefit, in the eyes of the employer is time. A 2 hour flight there, a few hours meeting the client and a 2 hour flight back is more time-efficient than the usual 10 hour return drive over a 2 day period, with a hotel stay in between.
As for the passengers, they're excited more than anything.
Having looked at what I thought were the relevant entitlements of the licenses, the legal jargon is not something I pretend to be able to interpret perfectly.
