Hi John
This is a tough one.
How much is the mortgage?
How much is the value of the property?
I presume you are on a cheap tracker?
Bank of Scotland will want their money back when the mortgage term is up.
Have you any other assets to sell?
Because of your age, you won't get a mortgage.
Your options, as I see them, are as follows
1) Sell the house and trade down.
2) Borrow from someone else e.g. have you a child who could remortgage their home to give you the money.
3) Try to do a deal with BoS. For example, agree to switch to a variable rate after the tracker period is up. If they sell your loan, the new owners might agree.
4) Tough it out as long as possible. Continue paying the interest only. It will take them a long time to repossess your home. It will be a lot of hassle and you will face legal costs. But it is an option.
Brendan