Questions asked of UK's aviation shortcomings as European airports cope with snow

For the fourth time in three years air transport in northern Europe, and especially the UK, has been hard hit by severe winter weather, which has dumped heavy snow across the continent. As has happened previously, there have been mass flight cancellations and the travel plans of hundreds of thousands of people using London Heathrow Airport over the Christmas period have been put in jeopardy. Now the recriminations have started.