At least 21 suspected terrorists are arrested in the <a href="https://en.wikipedia.org/wiki/2006_transatlantic_aircraft_plot" id="mwAR8" rel="mw:WikiLink" title="2006 transatlantic aircraft plot">2006 transatlantic aircraft plot</a> that happened in the United Kingdom. The arrests are made in London, <a href="https://en.wikipedia.org/wiki/Birmingham" id="mwASA" rel="mw:WikiLink" title="Birmingham">Birmingham</a>, and <a href="https://en.wikipedia.org/wiki/High_Wycombe" id="mwASE" rel="mw:WikiLink" title="High Wycombe">High Wycombe</a> in an overnight operation.