Support for other English locales
The documentation indicates other English locales coming soon. Please make these available. British English (en-GB), Canadian English (en-CA), Australian English (en-AU), New Zealand English (en-NZ), and Indian English (en-IN).
Just so you know about the alternatives: the free LanguageTool API (http://wiki.languagetool.org/public-http-api) supports en-US, en-GB, en-ZA, en-NZ, an-AU, and en-CA