Scandalous though the break up of this fine collection is, all is not lost. I understand that the forward fuselage and nose/cockpit sections of both the Trident and 707 have been saved by the Museum of Flight at East Fortune, near Edinburgh and are to be transported for display there. Additionally, the complete airframes of both the Viscount and 1-11 have been dismantled, (properly, not with a blowtorch) and are on their way to East Fortune too.
Not sure of timescales as to when the aircraft will be viewable though.