British Mark IX Armoured Personnel Carrier of 1918.
<ul><li><cite class="book" style="font-style:normal" id="harv">Royal Armoured Corps Centre, Bovington (1946)      <i> Tank Museum Guide. An Illustrated  Record of the Development of the British Tank. Part One 1915-1918</i>, Wareham, Dorset: Catalogue number LBY K. 58512  <small></small></cite></li></ul>
<p>Imperial War Museum - picture scanned by me <a href="//commons.wikimedia.org/w/index.php?title=User:Ian_Dunster&amp;action=edit&amp;redlink=1" class="new" title="User:Ian Dunster (page does not exist)">Ian Dunster</a> 12:52, 15 May 2005 (UTC) from: 
</p>
<ul><li><cite class="book" style="font-style:normal" id="harv">Royal Armoured Corps Centre, Bovington (1946)      <i> Tank Museum Guide. An Illustrated  Record of the Development of the British Tank. Part One 1915-1918</i>, Wareham, Dorset: Catalogue number LBY K. 58512  <small></small></cite></li></ul>