Personally, I'd avoid it like the plague !
If compounded long term, the interest paid back could be several times the amount borrowed - and I mean several times.
Witnessed a huge amount of debt consolidation during my working career, and most of it was done because of unmanageable debt.
Grin and bear the short-term pain until it's paid off, rather than consolidate, I'd say.
Here's a link to an online Loan Calculator which may be helpful.
<a class="postlink" href="http://www.moneymadeclear.fsa.gov.uk/tools.aspx?Tool=loan_calculator" onclick="window.open(this.href);return false;" target="_blank">http://www.moneymadeclear.fsa.gov.uk/to ... calculator</a>