cut mortgage or put into investment?????

I am paying a mortgage of 240k over 35 years for past 8 months. I recently came into 50k and am unsure what to do with it. Should I put it against the mortgage i.e. cut the years or place into an investment and if so what type of investment will earn the most and guarantee my lump sum.
I would welcome any advice.

Hi Seano,

What is the current market value of your property? This will determine what mortgage rates are available to you. Depending on the answer to that question, you should then look at the best deposit rates available to you and see if you can make money on the difference.

As a general rule I would say you should pay it off your mortgage, but I think it's probably worth checking the specifics first.

Kate.

Have you any other savings?
Have you any other debts other than the mortgage? If so pay them out of this.
If it was me, I'd put it in the bank for now if you don't have any other substantial savings. To use in the event you lost your job, or needed to buy a car so that you wouldn't need to enter into a higher interest loan agreement.
The fixed terms currently offer the best rates. Some of them allow emergency access to funds.