newbiedriver wrote:
hey thanks for getting back so quick, the thing that stuck out most to me was the fact it was a real policeman rather than the safety cam bunch..
I am a worrier!

, Even so the next 14 days will seem like a long time just in case...
Try not to worry.
He may have been doing an audit based on residents' complaints if he was in someone's driveway. We are not allowed to trespass

(Or at least - not anywhere I've worked

)
It may well be he did not judge your speed to be over and thus never bothered to ping you.
It may well be that your speedo read 35 mph and in reality you were below threshold.
Lot of officers do allow a fair-ish margin too and most of us out there apply common sense reasoning.