title: Google Maps Matrix API returning status:ZERO_RESULTS UK postcodes
body: <p>I am using the maps matrix api to find the transit distances between locations in England.</p>
  
  <pre><code>https://maps.googleapis.com/maps/api/distancematrix/json?
  units=metric
  &amp;key=YOUR_KEY_HERE
  &amp;origins=SE108aJ
  &amp;destinations=SE164UN
  &amp;mode=transit
  &amp;arrival_time=1568618400
  &amp;region=UK
  </code></pre>
  
  <p>It returns:</p>
  
  <pre><code>{
     "destination_addresses" : [ "London SE16 4UN, UK" ],
     "origin_addresses" : [ "Dartmouth Hill, Blackheath, London SE10 8AJ, UK" ],
     "rows" : [
        {
           "elements" : [
              {
                 "status" : "ZERO_RESULTS"
              }
           ]
        }
     ],
     "status" : "OK"
  }
  </code></pre>
  
  <p>The same request to Google maps works:</p>
  
  <p><a href="https://www.google.com/maps/dir/SE10+8AJ,+Dartmouth+Hill,+Blackheath,+London/London+SE16+4UN" rel="nofollow noreferrer">https://www.google.com/maps/dir/SE10+8AJ,+Dartmouth+Hill,+Blackheath,+London/London+SE16+4UN</a></p>
  
  <p>So I'm a little confused why the API call doesn't</p>