Buy to let repair finance?

[Chris_H]

I have a buy to let property which I've had for about 11 years. When I sell it in a year or so, it will need quite a bit of work doing to get it to a saleable standard.
At the moment, I keep about £20K in my rental account ready for that time. However, I've been wondering. Is that the best way to do things? Would it be better to borrow the repair money? Are there any tax advantages either way or is it basically the same whichever? What do others do?
Sorry, but I'm pretty clueless at this kind of stuff so hoping for a pointer.

[audidoody]

If you borrow the money you can claim tax deduction for the structural improvements and the loan interest. I don't think you can claim for redecorating.