I've been making quite a few changes to OSM from Bing. I moved a lot of roads slightly and wanted to check that Bing agrees with GPS. I drove from Hove down The Drive to the A259 coast road and along to Newhaven via Ovingdean and Saltdean. From Newhaven I went inland along the Lewes Road/Kingston Road to the A27. I drove to the A283 in Shoreham-by-Sea taking in my old house where I've added missing residential walks and garage compound driveways. I checked one driveway and one walk with GPS. I've corrected the topology of the roads and fly-overs at the entrance to Brighton Marina.