title: Google translate text-to-speech in British
body: <p>I'm using the (unofficial) Google translate TTS api to retrieve mp3s to support disabled learners to read web pages. It all works fine, however we have an American accent (we're in the UK!). When I use Google translate however, it fetches the mp3 with a British accent - how do I invoke this behavior?</p>
  
  <p>I've used the same GET request URL so I can assume it's not that:</p>
  
  <pre><code>http://translate.google.com/translate_tts?q=testing+1+2+3&amp;tl=en
  </code></pre>
  
  <p>(I've played with other language codes (en-gb) with no luck - fr works for french however.)</p>
  
  <p>Many thanks</p>