With regard to Mr Branson - he knows the project, as does the Virgin Management, that consults with him on his business activites.
The Virgin Company best placed in the Virgin empire to sponsor is VA, however I made a formal approach 18 months ago to VA and the CEO came back to me, saying it is a wonderful project but not something VA could do with. This has been followed up by VOC, and get the same line.
Because the Virgin brand is so domiant in the UK, Virgin does not need brand awareness. Also Virgin as a whole will be the main sponsor to the London Marathon from 2010 - the reason behind that deal will be to encourage further fundrasing by the par takers of the marathon.
Virgin also have there own Charity - Unite.
So as a business - no way. As a personal donor, well it would be nice!