Extra Interest Relief with a Longer Fixed Rate?

Hey All,
I've been quoted a few interest rates from my bank for my mortgage:

1 year fixed: 2.4% (I think this is what i was quoted, I may have misheard)
3 year fixed: 3.1%
5 year fixed: 3.69%

If I was to get the 5 year fixed option, would I then get more back in interest relief than lets say the 1 year fixed?
Or is there a calculator online that can do the hard sums for me?

Thanks

HK

Use this calculator - very handy

http://www.drcalculator.com/mortgage/

Obviously you will get more relief on the 5 year fixed, the downside of course you pay more in interest.

Before fixing have a read of the many many threads in regard to fixed rate mortgages and the advantages and disadvantages.