LONDON–(BUSINESS WIRE)– #creditratingagency–KBRA UK (KBRA) assigns preliminary ratings to nine classes of notes issued by Harben Finance 2017-1 Plc (Harben 2017-1), a static RMBS securitisation collateralised by seasoned buy-to-let (BTL) mortgage loans. The portfolio, aggregating £512.1 million in current balance, consists of BTL loans secured by first lien residential properties located in England and Wales. Harben Finance 2017-1 will refinance the existing Harben Finance 2017-1 Plc transaction, which closed in