Mount Street Group has received a significant boost after S&P Global Ratings upgraded its UK mortgage servicing business to “Strong” (A), citing portfolio growth, experienced leadership and enhanced risk controls.

The agency raised Mount Street Mortgage Servicing Ltd.’s (MSMS) ranking as a commercial mortgage loan primary servicer in the UK from “Above Average” to “Strong”, alongside improvements to its management, organisation and loan administration sub-rankings.

Its capabilities as a special servicer of commercial mortgage loans were reaffirmed as “Above Average”.

MSMS currently manages a €44.4 billion UK mortgage loan portfolio, part of a €67 billion pan-European book. Across the wider Mount Street platform, the firm now oversees €155 billion of assets under administration.

STEADY EXPANSION

S&P Global credited the business with steady expansion of its primary servicing portfolio, the tenure and experience of its leadership team, stronger internal controls following a consolidation of risk management functions, and an upgraded IT platform with an increasing focus on automation and information security.

The upgrade comes during a strong year for Mount Street, which has benefited from resilient private credit and structured finance markets.

In 2025, the group has onboarded €4.8 billion of new deals and been appointed servicer on a series of major commercial mortgage-backed securities transactions, including Taurus 2025-1, Taurus 2025-2, Pine 2025-1 and Lagarino (European Loan Conduit No.40) DAC.

It has also expanded its commercial real estate primary servicing team as part of a broader effort to extend its market presence and client reach.

AUTOMATED TECH

Serenity Morley (main picture, inset), chief operating officer at Mount Street, said: “This ranking upgrade is testament to a lot of hard work and reflects our continued commitment to investing in our management and staff, improving our reporting functions, alongside the ongoing integration of automation and technology across all relevant aspects of our platform.”

Morley added that the firm saw significant growth opportunities despite macroeconomic uncertainty.

“Having established a market-leading commercial mortgage offering in the UK, we are excited by the opportunities we are seeing both in the UK, as well across Europe – globally.

“2025 has seen a marked uptick across both the UK and Europe in terms of refinancings and new loans. Whilst near-term macroeconomic volatility continues to weigh on transaction volumes, improving investor sentiment should support a meaningful market recovery.”