Good for you Tunnie. Pile into your company pension scheme as much as you cannot afford.
I think there are only two approaches. One live now and accept that if you ever actually make it to a retiring age as it escalates up and up (with living longer and crisis drivers). i.e. spend what you have and save nowt extra for your old age
OR contribute big time to something you can hopefully get your hands on when you are say 60 or 65 and hope you live a long retirement. (that might mean excercise, less booze, fags, beefburgers etc)
I put a lot of money into a pension funds in my 20's and 30's and saw good growth on these funds, but unfortunately a divorce and 10 years of zero or less equity growth and high UK administration fees have see it shrink faster than exposed gonads in the Arctic. Not to mention QE and the low Gilt interest rates, killing the annuity markets, compounded by the Government making pension funds keep a higher percentage of the funds in Gilts.

Don't even get me started on Gordon McRuins £5bn per year pension tax grab, which changed our pensions from the best funded in Europe to now by far the worst.

The lesson I've learn't NEVER let the Government and Banksters have the upper hand on the conditions in which you save money. Once it is locked in under their "Management", the rules will change only in one direction, to their advantage.

So unfortunately the best laid plans, don't always work out like that.