Routemaster RM1204 on heritage route 9.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/33174580@N00">Mike_fleming</a> from London, England
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/flem007_uk/3054218960/">Routemaster</a>