No, the balance gets written off 30 years after graduation.
This is not necessarily correct - it depends upon when you took your loan out.
The following information applies to England and Wales only (scotland and NI have different arrangements.
Loans taken out between 1990-1997: after 25 years from first repayment or when you turn 50 (assuming that you were under 40 when you took the loan out, if you weren't then it's when you turn 65).
Loans taken out between 1997-2005: when you turn 65.
Loans taken out between 2006 - 2011: after 25 years of first repayment.
Loans taken out from 2012 onwards: after 30 years of first repayment.
First repayment is usually April following graduation.
I'm in the 1998 - 2005 group and I probably will still be paying my loan back up until or neat retirement as I'm now part time and repayments are low and mostly just cover the interest. However to answer the question no, it's never held me back in life. The system is in all but name a graduation contribution system and I personally think that is what it should be called rather than this potentially misleading language of fees, loans and debts.