Jock Kane
... that the GCHQ whistleblower Jock Kane was prevented from publishing two books?
... that the <a class="mw-redirect" href="./Government_Communications_Headquarters" id="mwARY" rel="mw:WikiLink" title="Government Communications Headquarters">GCHQ</a> whistleblower <b id="mwARc"><a href="./Jock_Kane" id="mwARg" rel="mw:WikiLink" title="Jock Kane">Jock Kane</a></b> was prevented from publishing two books?