What is the time period for paying back the loans, and how big is the monthly payment? Is it CPI or RPI? If the rate is high enough, even if it is just inflation it might be worth overpaying, depending on your short and medium term financial goals (e.g. EF, house deposit etc).
I deferred my student loans for years (that was on the old scheme where you had to be making 85% of average (mean) earnings before you had to start repaying), but you had to pay them off over 5 years once you were earning enough to pay them back. The £100pcm was an annoying addition to my budget, but the interest rate was low so it didn't make sense to pay it off. But after a couple of years they put up the interest rate to 4.8% so I decided I'd rather just pay if off in a lump sum and start investing the extra £100pcm it freed up in S&S ISAs. Maybe I would have come out a little ahead if I had invested the lump sum rather than the £100pcm for the 2 1/2 years I would have had left repaying it, but it was so nice to see my savings rate increase, even though I had given up a bit of capital to do that.