That is indeed a generous payout compared to the majority of private-sector redundancies. No small wonder Council Tax continues to go through the roof.
A couple of thoughts - since it is only you who can work out what you feel you need to live on: -
You are one of those women affected by the uplifting of the State Pension age from 60 to 65 (progressively). You can find out when you will actually get your pension from this link here.
http://pensions.direc...r/pensions-reform.asp
So you are going to be around 63 before you can factor-in that additional £100 or so per week (in today's money) to supplement your retirement income.
Only the first £30k of redundancy payments are free of tax - the rest is taxable at your marginal rate - which sounds like 40% for you. One way to avoid HMRC clawing back part of it is to put the excess in your pension pot. You can, of course, normally draw 25% of the total pension sum (on your eventual retirement) in cash - but check with the scheme provider.