A <a href="https://en.wikipedia.org/wiki/Thames_sailing_barge" class="extiw" title="w:Thames sailing barge">Thames sailing barge</a> bob- the house flag of the company in the  in 1949
<a href="//commons.wikimedia.org/wiki/User:ClemRutter" title="User:ClemRutter">ClemRutter</a>
<span class="int-own-work" lang="en">Own work</span>