This is what scares me. I live in a 20mph area. When I drive my car at 23 - 25mph I get irate drivers tailgating me, passing angrily, often with blasts of the horn, often with charming gestures. Average speeds on my roads are nothing near 20. When I’m on my bike I don’t risk putting myself in this danger and I admit on open forum that I do go above the the 20mph limit.
With police cuts the only way they can enforce this initiative is with cameras. Get ready for biking being that little bit more uncomfortable.