BIB on the Motorway late at night. Do they still patrol ?!

[catfood12]

Having to do day trips up north at least once a week at present. I end up leaving the office in Nottingham (up north from where I am!) at 8:30PM or later and toe it 200 miles back home. I've not seen one police car on M1, A43, M40, A34, M3 or M27 en route, in weeks of doing this. The motorways are losing their charm, in my eagerness to get home each time, I've begun to maintain a reasonably rapid pace, whilst keeping 'em peeled. Whilst keen not to push my luck after about 8000 miles of this pesky commute, where are all the BIB ? Have cutbacks, paperwork, donuts or other assignments mean they're no longer patrolling the motorways regularly late evening in the week ?