Banner-form representation of the combined arms of the diocese (with keys) and cathedral (with swords) of Peterborough, England. This combined form has been on occasion used by the city (see for example <a href="//commons.wikimedia.org/wiki/File:Cathedral_Square_Peterborough_Arms.jpg" title="File:Cathedral Square Peterborough Arms.jpg">File:Cathedral Square Peterborough Arms.jpg</a>) prior to the current city arms being granted.
<a href="//commons.wikimedia.org/wiki/User:HarJIT" title="User:HarJIT">User:HarJIT</a>
CC BY 4.0
<span class="int-own-work" lang="en">Own work</span> (representation, see below). Composition referenced from <a href="//commons.wikimedia.org/wiki/File:Cathedral_Square_Peterborough_Arms.jpg" title="File:Cathedral Square Peterborough Arms.jpg">File:Cathedral Square Peterborough Arms.jpg</a> and <a rel="nofollow" class="external autonumber" href="http://www.ngw.nl/heraldrywiki/index.php?title=Peterborough_(England)">[1]</a>.