Earlier quoted context omitted.
I think you are confusing state pension with employer pensions, employer pension contribution are only now being mandated by law, and most companies which use PAYE and are under 50 employees still do not have to do it, the dead line now is 2018 but it's been pushed back all the time. The shares you got from Sharesave would be "real" shares only if you bought them at the end of the maturation period if you cashed out…
That's because the options for mandatory pensions are: 1. High risk fund backed pension. Probably will decline in value due to fund saturation. 2. Low risk fund backed pension. You pay more in yearly fees and decline in value. I killed mine dead. Stupid idea. If base rate was higher, perhaps but its a stupid stupid idea now.
And saving tax now at 40-50% and only paying standard rate later is a no brainer and if you can do it via salary sacrifice and get some or all of the NI added to the pensions