gpxeditor.co.uk allows you to switch between google maps (with streetview), satellite view, OS maps and OSM so you can manually check out what's near your route.
Good to know. Does it have OS maps available? I've got used to gpxeditor now - I like the clean interface and the fact that you don't need to login - but might try RWGPS as an alternative.
gpxeditor.co.uk allows you to switch between google maps (with streetview), satellite view, OS maps and OSM so you can manually check out what's near your route.