I’m in receipt of a final salary scheme pension and I pay 20% tax on it but no NI or SA. I think you have to pay NI for 30 years to claim the state pension but not sure, how you withdraw from it. For some, it may be worth delaying the state pension, if you have other pensions, as it will increase but if you die and have postponed it, your estate gets nothing, so it’s well worth getting some advice.