I've got the same issue, it's going to cost £2000+ through Surrey County Council just for 4 meters, I'd be okay if it were £800 but £2k is crazy. It's only about 50mm high so easy to drive up and down, but people keep parking across it and blocking us in.
Found an approved contractor who will do it on the side for £400 cash which is much more appealing, does anyone think the council keeps a record of which kerbs have been dropped? I wonder if they would take legal action if they found out or just make me pay the full going rate.