SAS, that's correct.
There's no authorisation oversight, no ops staff, so no-one to book your airfield slot clearances or find suitable off airport landing sites (and gain the CAA permssions where needed), arrange aircraft hangarage, your overnight accommodation, transport to and from it .... Then the check A, oil replens etc are all done by you because the engineers don't get to see the aircraft for weeks...it goes on. Of course, as an added bonus, the pilot gets to carry the passenger's luggage.