Perth Qantas passengers impacted by a 24-hour outage at Heathrow Airport will be shuttled to their original destination of London by bus after a fire forced the international travel hub to its knees. QF9 from Perth to Heathrow was redirected to Charles de Gaulle on Friday, as was QF1 Singapore to London, after a blaze at an electrical substation brought one of the world’s busies airports to a complete standstill.