<p>I've checked with the senior Network Engineer at Information Services Division at University College London, and he has confirmed just now via email that for this file <em>“although we host the servers their management is all done externally”</em> and has directed me back to OSM.</p>
<p>This file's <em>Content Negotiation</em> is not fixed by the <em>Last-Modified fix</em> that has solved it for all other static files. This one just needs an active <code>cache-control</code> + <code>Expires</code> value providing & we will be good.</p>
<p>Will you sort that, please?</p>

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