Former London Transport Routemaster RM1643 being used by NHS to enlist organ donors.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/24592131@N00">Terry Whalebone</a>
CC BY 2.0
originally posted to <b><a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a></b> as <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/24592131@N00/770949602">Routemaster RM 1643</a>