Progressive Graduate Contribution - the NUS Blueprint
Those that have followed the link in the previous post will have also noted the following text on the NUS webpage (previously linked and currently linked).
Progressive graduate contribution
NUS' Blueprint proposes that students contribute to the costs of their degree once they have graduated. Under this system those who benefit most from university by earning more will contribute more.
In other words the system proposed by the goverment is much the same as that proposed by the NUS - and supporting the system cannot be seen to be a contravention of the NUS pledge.