Sam King
... that upon his election as Mayor of Southwark in 1983, Sam King was the only black mayor in London?
... that upon his election as <a class="mw-redirect" href="./Mayor_of_Southwark" id="mwng" rel="mw:WikiLink" title="Mayor of Southwark">Mayor of Southwark</a> in 1983, <b id="mwnw"><a href="./Sam_Beaver_King" id="mwoA" rel="mw:WikiLink" title="Sam Beaver King">Sam King</a></b> was the only black mayor in London?