Hi parallelcottages,
Thank you for your question. We can only follow the guidance available to us and
BIM45700 relates to the withdrawal of profits/capital in a business and substitute it for interest bearing loan which can qualify as an allowable deduction on the proviso that the loan is used as working capital in the self same business. You offered no details to your question and further it is not an approriate question for the income from property forum. I strongly recommend that you correspond with HMRC, outlining your observations with the case you refer to.
Thank you.