Pension sharing incorrect

Malthusian

If the CETV had gone down would you be happy for your ex to come after you demanding a greater share of the non-pension assets?

Move on. You haven't lost anything. You still have the 33% of your pension you agreed to. And as it appears to be a defined benefit pension, you've got exactly the same guaranteed income that you were banking on when you struck the deal (i.e. 33% of what it used to be).

The fact that her 67% is worth more is neither here nor there. The extra transfer value came out of the wider defined benefit scheme assets, not your 33%. In terms of future guaranteed income you've got exactly as much as you did before the CETV increased. In terms of the CETV, your 33% of that has gone up as well. So in no way has the increase in the CETV taken anything from you, quite the opposite.