Rochester Financing No. 3 PLC is a static RMBS transaction that securitizes a portfolio of £214.4 million owner-occupied and buy-to-let (BTL) mortgage loans secured on properties in the U.K. The transaction is a refinancing of Rochester Financing No. 2 PLC, which closed in February 2016. Shortly before closing, Rochester 2 sold the portfolio back to Rochester Mortgages Ltd., the seller and legal title holder. At closing, the issuer, Rochester Financing No. 3, used the issuance proceeds to purchase the full beneficial interest in the mortgage loans from the seller and legal title holder. The issuer grants security over all of its assets in favor of the security trustee. We consider the collateral to be nonconforming, based on the prevalence of