Rental Property: Capital Allowances brought forward from a prior year

Hi There,

Question from an accidental Landlord!!!

We have a property which we have been renting out for five years now.

Unfortunately I have only just realised we should have been
claiming 12.5% depreciation on the furniture etc each year.

I am clear about this years depreciation as I can just put that in the 2012 box

but is it okay to claim the other four years depreciation in the box
"Capital Allowances brought forward from a prior year".

Thanks.