MELBOURNE (S&P Global Ratings) Sept. 22, 2023--S&P Global Ratings today raised its ratings on five classes of notes issued by Perpetual Trustee Co. Ltd. as trustee for Mortgage House Capital Mortgage Trust No.1 in respect of the Mortgage House RMBS Series 2021-2. At the same time, we affirmed our ratings on three classes of notes (see list). The rating actions reflect our view of the credit risk of the underlying collateral portfolio. The asset pool has continued to amortize and has a pool factor of around 33.6% as of Aug. 31, 2023. Loans more than 30 days in arrears make up 1.70% of the current balance and there have been no losses to date. Furthermore, the portfolio has strengthened, with