Apologies if this question is naive but I'm struggling to understand how this type of operation is classed as a private flight.
The definition if a private flight is "In private flight the pilot is not paid, and all aircraft operating expenses are generally paid by the pilot."
In this case the aircraft was owned by a limited company, not a person.
So the pilots are employed by the company to fly an individual from one residence to another.
If these locations are also registered company offices then perhaps they could 'need' to make a trip from one to the other for 'business' purposes the locations also being private residences being purely fortunate. Fine that's a company matter transporting an employee or director on business.
If it was a trip for an individual from one home to another how is that accounted for on the company books?
Is every journey in these aircraft purely for private business needs?