I don't think VM are getting anywhere near the flak they deserve. They are content to let Phorm take it all.
There are hints of a VM takeover (project co-axial)
http://www.guardian.co.uk/business/2...richardbranson
If this is the case they will not want any mass defections of 'marketing opportunities', nor would they want anything about any possible trials coming to light.
I'm not saying thay have conducted trials, but the best thing to do with any possible take-over in the background is to keep silent, especially when it will also delay mass defections.
The cost of a scandal or mass defections, in a take-over situation, will dwarf the potential profits to VM from Phorm.