Straightforward obstruction of the highway. If they don't budge, call the Police. I've issued several tickets for exactly that reason. If you have a dropped curb( to the best of your knowledge installed by local authority), then they are obstructing your access to the highway. Open and shut case.
Oh please come to Fareham and do a few, the local 'team' don't want to know, even if endangers children trying to get to school...http://www.flickr.com/photos/nieljohn/sets/72157603403211733/
Hehe, on Friday I had to call the Old Bill. I was in a narrow street, with a 90 degree bend at the top, nursery right on the bend (the kiddies type) with the yellow zigzags, and 3 cars parked on the lines. As a direct consequence of the cars being there, I could not possibly negotiate the bend (a 33' rigid is not known for its manouverability).
About 5 minutes after I spoke to the control centre, a police van showed up. Unfortunately, on catching wind that the police had been called, the inconsiderate gits (all residents) jumped in the vehicles and scattered. One of them even had the cheek to remonstrate me about having called the police.
Lotsa Kudos for Herts Constabulary.
