Guv-nerd,
I really thought at least YOU would know more about this kind of business deals...
The money is not coming from VEX (Belgium) itself (which is highly unprofitable since the bankruptcy of SN), but will come straight from the UK via a financial branch of the Virgin Group. It will be directly invested in dat's future mother company Air Holding NV/SA, without first passing via VEX.
In fact, the aim seems to be to get rid of the name Virgin Express and its low fares product all together by merging it with dat under the name of Sabena Europe!
That way the shareholders of Air Holding will in fact have successfully created a single, medium-sized, stock-exchange listed airline with a quasi monopoly in Brussels!
Also, it would immediately provide New Sabena Sabena with a significant intercontinental partner (Virgin Atlantic) for their much wanted flights to the USA and Asia (via LHR where dat has 9 daily rotations), whereas New Sabena would more easily get the cash (an emission of extra shares) and passengers (Virgin Atlantic) to relaunch the most interesting part of its African network.
To bad you couldn't work out this kind of basic business analysis yourself...