Brigadier-General <a href="https://en.wikipedia.org/wiki/Robert_Marsland_Groves" class="extiw" title="w:Robert Marsland Groves">R M Groves</a> as Deputy Chief of the Air Staff.
Unknown author<span style="display: none;">Unknown author</span> — Not given in Flight magazine.  Not found by Google image search.  Not available in uploader's extensive library on British air power history.
Published 3 July 1919
Flight magazine (<a rel="nofollow" class="external free" href="http://www.flightglobal.com/pdfarchive/view/1919/1919%20-%200865.html">http://www.flightglobal.com/pdfarchive/view/1919/1919%20-%200865.html</a>)