I have a pensions gov forecast that seems to say that the SERPS abolition in a couple of years will not affect my pension benefits as have been in SERPS throughout. Hope this is correct as it would be extremely naughty if those near retirement like me were deprived of those benefits when new single tier pension comes in. Fortunately I do have 2 private pensions as well.
I will probably keep working in any case as job is interesting and I have a lot of flexibility which is necessary with elderly family issues.
When the new flat rate pension scheme starts in 2015/6, they will calculate what your entitlement is under the old scheme - it's called the foundation amount. Then when you retire, you will get whichever is greater - the foundation amount, or the new flat rate. The basic state pension is currently £110 ish per week. SERPS/S2P is paid in addition to this. People close to retirement with decent SERPS/S2P are likley to have quite large SERPS/S2P which can in some cases efectively double this amount to over £200 p/w.
The flat rate system is actually stealing from the young (under 30's) to fund the SERPS of the older generation (50+). There is no "serps" after 2015/6 - it's just flat rate of £140 ish built up over 35 years - so about £4 per week per year of NI contributions you make. If you don't start work till after 2016, then the max you can ever get is £140 p/w.
I'm going to be a winner from all this, but I believe the system is overly generous to my generation.