I hate to say it, but this HAS to be done.
There is simply not enough money to pay the ageing (State employed) population such a generous pension. Its not right and its not fair, but thats the reality and who brings it about isn't the real issue here, but when. Of course, Brown will want to hand Cameron the poisoned chalice who, in fairness, has called for this for quite a while now.
David Cameron: Time to slash public sector pensions | This is Money
The tragedy is, many of the defined contribution schemes which replaced them are now being hammered as the rules are less onerous, as people can't contribute, and as the markets got hammered and as new 2012 pensions legislation is on the horizon anyway.