Tools you can use to drag and drop, or copy and paste your data to sketch it out.
- Blockbuilder - Online tool to do coding in the browser and save to gists.
- Mapshaper - Previews shapefiles, geojson and topojson files
- Open Geography Portal - Find boundaries for different geographies e.g. local authorities, counties, countries, regions, constituencies, MSOA, LSOA and more.