A local authority pension is final salary, so you can not cash it in. If you take it 5 years early you get an actuarial reduction of 25% in your pension. But local authority pensions are tied to state pension age. So you don't actually get your pension until you get your state pension. At the earliest this will be 67 but is likely to be a lot older.
AIBU to think there is absolutely no point in anyone joining this pension scheme?