A <a href="//commons.wikimedia.org/wiki/Routemaster" title="Routemaster">Routemaster</a> tour bus of <a href="//commons.wikimedia.org/wiki/Category:Premium_Tours_(London_bus_company)" title="Category:Premium Tours (London bus company)">Premium Tours</a>, London, England. It's probably <a href="//commons.wikimedia.org/wiki/Routemaster_bus_RML2729" title="Routemaster bus RML2729">RML2729</a> based on the small window (the company has at least one other Routemaster in this red livery, but it's RM85, of the RM class, which do not have this small window which extended the original RM class into the longer RML production series).
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/23390789@N08">Lara Torvi</a> from Toronto  / New York City
CC BY 2.0
<p><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/ltorvi/5758916525/">Premium Tours</a>
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<ul><li>Uploaded by <a href="//commons.wikimedia.org/w/index.php?title=User:Ultra7&amp;action=edit&amp;redlink=1" class="new" title="User:Ultra7 (page does not exist)">Ultra7</a></li></ul>