Earlier this year Carolyn McCall wouldn't rule out ever flying from Heathrow
http://www.travelweekly.co.uk/articl...+heathrow.html
Whilst its unlikely, never say never.
As for Virgin Little Red, was it simply bad business logic that led to them competing on these domestic routes. I must confess I always found it strange why they thought Aberdeen would be a good route and given Virgin's rail connections between London & Manchester, why effectively compete with themselves? The one route I thought might stand a chance is LHR - Edinburgh but it seems not?