Have you considered what your would do if your found yourself unable to work?  
Mortgage Payment Protection or Income Protection policy could be your answer.

What’s the difference?
Mortgage Payment Protection covers your MORTGAGE related payments if you should find yourself unable to work for an extended period due to Accident, Sickness or actually losing your job.  Expenses covered include mortgage payments, life insurance premiums, buildings and contents insurance premiums and payments on any endowment policies you may have.

If you have an Income Protection policy on the other hand, it doesn’t just cover these mortgage related expenses.  It provides a replacement income to cover your general living expenses.