OK, then I accept my knowledge is somewhat off as it's based off the inflated "truths" in the media. Regardless final salary schemes of any sort are pretty much unworkable. The civil service (and I include the elected members in this) should be using the same schemes that are proposed/coming in for everyone else: contribution based schemes invested in the markets. If it's the best they can come up with for the general population (and I firmly believe that the civil service are as much behind these proposals as the Government) then it's good enough for them.
The problem with Final Salary schemes is that all of the liability lies with the employer and none lies with the member. If things go wrong and there is a shortfall, it is the employer who has to cover it. In tough times, no employer wants to take this risk.
Unfortunately, the opposite is true of a Defined Contribution scheme where the member takes all of the risk. If there is a shortfall in your pension then tough luck!
In a final salary scheme, it is likely that the pension will be based on the members top earnings at the height of their career multiplied up by the amount of service and then various factors are applied. If you get a big pay rise at the end of your career, the cost of your pension will skyrocket, leaving your employer out of pocket.
A good compromise is a Career Average Revalued Earnings (CARE) scheme. This works on a similar basis to a Final Salary scheme, but is much less generous. With a CARE scheme there is a guaranteed amount of pension at the end of it, but the amount reflects a members entire career. Pension "blocks" are calculated on a yearly basis and remain in place until retirement. If you have a huge salary increase, only future accrual will see the benefit.
The liability here still lies with the employer, but the costs are much reduced and with contributions from both the member and employer, the risk is lower.
The idea of a final salary scheme isn't so bad, it's just that employers have been too generous during good times and are now feeling the affects in bad times.
Back on topic though... I have a very low opinion of Royal Mail at the best of times. Delivery to my flat is terrible. Post never arrives in the morning, and often not even on the day I expect. Constant strikes are not improving anything and just annoying customers further. If things continue to get worse, I doubt I will continue to support Royal Mail.