Anyway, I don't actually have a pension plan. I did think about it a while back - when I started using MS Money to track my accounts (when I was 21), the manual talked about compound interest, and said that investing X amount of money each month from 22-30 would result in the same overall pension as saving from 30-65. But I was also living pretty much hand-to-mouth at that point, so I wasn't in a position to afford it.
Nowadays, I'm leaning towards the view that it's best to pay off debts before I worry about savings, on the basis that the interest I'd pay on a loan is higher than the interest I'd earn. More specifically, once credit card etc. are out of the way, I'm looking at my mortgage. Some news reports have said "Don't rely on your property for your future", but I think it depends how you interpret that. If they mean "Don't assume that your house will double in value by the time you retire, so you can sell it and be quids in", then that's probably wise. But if you've paid off your mortgage completely, then you have no "rent" each month, which obviously makes it easier to handle the bills. Similarly, if you pay off a mortgage in 20 years rather than 25, and then put the final 5 years worth of payments into a savings account, that's a reasonable nest egg. And I think there's a case for saying that paying off a loan is a safer bet than investing your pension in the stock market.
The other aspect is that I don't have any specific retirement plans. I get the impression that writers and academics can basically carry on until they drop dead or get bored, rather than being booted out at 65. So, if I'm doing something I enjoy by then, it wouldn't be a disaster to keep with it. That fits in with my general philosophy, e.g. losing a year's salary to do an MSc.
Obviously this whole plan gets skewed a bit if I decide to buy a bigger place in 10 years, or get married and have kids, but it will do for now.