Ways not to lock your bike

Spotted in Soho this morning:

Probably not there this afternoon.

Brand new! Quick releases on both wheels! Clipless pedals so not owned by a complete idiot. I looked around nearby buildings to see if I could isolate where the owner worked to warn them, but nothing obvious so continued on my way. Hope they don't have to learn the hard way.

would almost be compelled to take it and leave a note along the lines of "saved your bike you nompty, give me a ring to get it back".
almost compelled