gentlegreen
I hummus, therefore I am ...
A quick Google suggests it isn't.This looks to me like the Osmanthus Burkwoodii. As where I work, we grow this plant. (And I'm not Nadia, just borrowed her id...)
It looks like box (buxus sempervirens) - but there's a similar small-leaved shrub that's also used for topiary.
Box has a very distinctive aroma.
Perhaps a male cat is marking it ?