Back in the day I took out 2 small student loans when they were first introduced. About £500 each, the total debt is now (only) about £1300.
I understood that they would be written off iirr in 15 years (?) if my gross income didn't reach a certain level. This level is now a little over £29k and my gross is about half that.
I just defer repayments year after year by providing my last 3 months payslips. No problem, only a small hassle but will I still be needing to be doing this when I'm 60? 
The loan company since the original loans were taken out has changed a couple of times. Not sure where my original paperwork is - any advice please?