A number of local authorities had such schemes in place during the 60s and 70s.
I believe that you paid money in from your wages (before tax) and that it went in to a superannuation pot which you were entitled to as cash when you left - you did not have to buy an annuity.
Was this roughly it - did your cash pot attract interest - ie did you get out more than you put in?
If you still had money in such a scheme now - would the first 25% be tax free as per private pension funds?