Are you relying on DH?
Are you thinking you'll have enough from previous/future jobs? Or are you paying into a pension at the moment?
If the latter, can I ask how much?
I am sort of doing a mixture of all of the above, with a fair amount of "on a wing and a prayer" too. I only put £100 a month away in an ISA, which is earmarked for pension. I know this isn't really enough..I have previously put lump sums in it and hope to continue to do this, but still probably won't be enough.