An easier place to search for coordinate systems...
If you need a quick and easy to use resource for coordinate systems search try: EPSG.io. This is an open source web-service providing a database based on the official EPSG database that is maintained by OGP Geomatics Committee.
You can quickly search for an area, name and type like any other web-search engines.
For Example searching "United Kingdom" and click on the British National Grid result produces the following page:
See below for a British National Grid example:
Some of the Key Features:
- Easy full text search for the complete database of coordinate systems from EPSG
- Short URLs that reference the EPSG code e.g. http://epsg.io/27700
- Area of use for any CRS referenced on an embedded map
- Export definitions in various formats