Not noticed this before in manage my booking, thought I would give it a go just now:
We value your business.
Unfortunately none of our Virgin Atlantic Online Chat representatives are available at this time as you have reached us outside our normal hours of business which are 9am to 11pm UK weekdays (holidays excepted).
Please continue to browse our site and feel free to use our self-serve options.
Thank you!
I do love Vrigin's IT department
We value your business.
Unfortunately none of our Virgin Atlantic Online Chat representatives are available at this time as you have reached us outside our normal hours of business which are 9am to 11pm UK weekdays (holidays excepted).
Please continue to browse our site and feel free to use our self-serve options.
Thank you!
I do love Vrigin's IT department

It was like that when I got here, Sir!