Charlotte Internet2253

In other words is this a legal loophole or is it considered a tax avoidance scheme?

Hi, I have been advised that it is possible for me to get a buy-to-let (BTL) as personal mortgage and then arrange for my solicitor to set up a Trust Deed showing that I act ‘as an agent’ for the Ltd Co. That way the BTL interest rates are much lower compared to a Ltd Co BTL and I have the benefits of a Ltd Co taxation. Is this a legal loophole? Is it common practice? I can't find any detail online about it. I'm confused because if the mortgage interest is a personal cost, how would it be a tax deductible for by the Ltd Co?