ALL ROUND PICTURES BY SOLARPIX.COM.**MUST CREDIT SOLARPIX.COM OR DOUBLE FE WILL BE CHARGED**.**NO PUBLICATION IN FRANCE, SCANDANAVIA, AUSTRALIA AND GERMANY** NO UK NEWSPAPER PUBLICATION - UK MAGAZINES ONLY**.The UK Christmas travellers are facing a third day of misery as thick fog causes more flight cancellations and delays. .More than 300 flights have been cancelled at Heathrow today 22/12/2006...DATE:22-12-06-JOB REF:3184-SFE