@shri thanks for posting this.
Just to mention, the "3 month borrowing cost" referred to in the article is 3 month Hibor, which is not the rate applicable to Hibor-based mortgages. This would be of course the 1 month Hibor rate. The reason why I mention this is because 1 month Hibor is still way off the highs. Which is good news for people with this type of mortgages.