Not on the commute as such, but rush hour city cycling. I was riding along just after sunset, and I noticed 2 bike cops loitering very close to a building, maybe 2-3m from the cycle path. Then I realised why they were there, and slammed on the anchors. Turned on front and rear lights, nodded to them both, and rode off. 50m further down I spotted another cop loitering close to a building in the shade of some brickwork pillar type affair, where you wouldn't notice him.
I'm guessing they were out looking for people without lights, or brommers being brommers. Sneaky tho...
Hadn't realised how much I'd got used to the Dynamo lights on the big bike. Having to turn on the battery lights of the Brompton feels weird now...
J