I think you may be asking the wrong people. Pilots tend to stand a little apart from the identifiable culture of the organisation they work for. The nature of the job is so safety orientated that you'd probably find little difference between the pilots of Virgin, BA, Thompson or any of the other major British airlines. We have little effect on, or contact with, the commercial and marketing culture of our organisations, which is the part that the general public sees and the part that differentiates the various companies - and the part, no doubt, that your University is intending to discuss.
If you want an authoritative view on how Virgin Atlantic sees itself, and what it regards as its culture, you'd be best off contacting the company directly. As I'm sure you're aware, Virgin likes little better than an opportunity to sell itself!
Scroggs