Top of the hour radio news (KFI) basically said that Scotland Yard thwarted a plot to explode a plane. A plane. They didn't say 20 and they didn't mention that the threat was ongoing, though she did say that the UK's terror alert level is raised.
Just heard on FNC the explosives where liquid. No liquids are being allowed on planes. (I bet there are a lot of unhappy passengers right now!)
FNC has SKY NEWS on and we're getting ALL of the Brit news right now. Go put on FOX.
Just heard CNN Intl define the critical threat level as an attack is imminent.