In the UK, utilitisation tends to be poor - due to poor weather much of the year, poor business organisation at many schools, freelance instructors not turning up, poor aircraft condition resulting in a lot of downtime, the school being unwilling to fix each defect and instead waiting for them to accumulate, etc.
And on account of lots of UK renters and students have jobs, or else they couldn't afford the flying, which means that in order to have enough aircraft available at weekends that the punters don't get pissed off and go elsewhere most of the hardware is sitting on the ground earning nothing on weekdays.