Unfortunately round here is a hotbed of militant cyclists who do regularly and deliberately block roads, and the majority also seem to fall into the "above the law" category.
What really puzzles me is that on local roads most cycle on the footpath "cos its safer" (for them, not me!!), but on the main dual carriageway which has cycle tracks or wide shared pedestrian/cycle paths for its full length through the borough they all bar the odd one ride on the main carriageway among heavy fast moving traffic.