I believe the Virgin planes are their old A340s which were already being got rid of. They have moved them to Bournemouth so they have space to store newer aircraft at their main hubs.
According to a pal of mine who works for BA, the main hubs are also excruciatingly expensive to keep the planes at on the ground, hence loads being shipped out to smaller regional airports where there is space.
There’s an airfield somewhere I think around the Sussex Hampshire border IIRC where planes are occasionally stored.
British Airways A320's been flying into Bournemouth for the last few days also a few Virgins..
Apparently there are approaching 30 parked up along the perimeter fence of the main road and elsewhere which is an unusual sight and will probably make an iconic image in years to come . I've seen a video but can't post it.
My daughter is BA cabin crew and its a sad sight watching them fly in (we're on the flight path)...... 'sad to see so many of our baby buses parked up'
That’s because they’ve all left a ton of us abroad stranded and been absolutely no use in helping us get home.