I rarely nod at the trainers & hoodie scooter brigade but try to say hi to any learner who is taking it seriously (traffic permitting). After all, it's only a matter of time 'till they're riding an SV
Always make a point of giving the emergency services bikers a bog ole nod out of respect - The paramedics usually return the gesture but the police ALWAYS ignore me

Maybe the hampshire lot just aren't that friendly...