Carlton TV has shown a behind the scenes documentry showing what was being filmed at a disused airfied in Wiltshire.
Dark Horizons reported on the filming The facility was converted into a massive ice set for an action sequence involving the Bond Aston Martin which was being chased by sports cars with rear mounted chain guns. Vic Armstrong indicated they'd be there for six days of shooting which would amount to only about 30 seconds of film. The set itelf was a flat ice sheet with dressed up 'mountains' and 'ice boulders' all over the place, whilst there were shots of the Aston Martin being put though it's paces with gunfire sparks coming off.
Seemingly, they're filming pick-up shots that were missed in Iceland.