England business spokesman : Disruptions would likely cost 11.30 . Meteorologists said snow is worst in southeastern UK in Monday , Tuesday . Major international airports including Heathrow , Gatwick badly affected . UK weather service issues severe weather warnings for 18 years .
UK business spokesman : Disruptions would likely cost $ 1.7 billion . Meteorologists said snow is worst in southeastern England in 18 years . Major international airports including Heathrow , Gatwick badly affected . UK weather service issues severe weather warnings for Monday , Tuesday .