A&O Shearman has advised Santander UK on a GBP1.4bn provisional portfolio RMBS transaction backed by UK residential mortgages, which closed on June 17, 2026.
This transaction builds on the success of Frontier 2025-1 and marks another successful trade for Santander UK involving the sale of a substantial portfolio of non-performing and re-performing loans including both buy-to-let and owner-occupied loans, underlining the bank's continued commitment to balance sheet optimization.
Bank of America arranged the transaction and acts as risk retention holder. Bank of America and Banco Santander acted as joint lead managers.
The notes comprise a Class A NRR Loan Note together with Class A–G Notes, a Class Z Note, a Class X Note, RC1/RC2 Certificates and Class S Certificates.
"This transaction not only demonstrates the ongoing effectiveness of Santander UK's balance sheet management strategy, but also highlights the strength of our collaborative approach and deep expertise in advising on high-value, complex structured finance transactions. Building on the success of the Frontier 2025-1 transaction, this trade is a testament to the market's continued confidence in Santander UK assets. We are proud to have played a central role in its completion."
Salim Nathoo
Partner
The A&O Shearman team was led by partner Salim Nathoo alongside senior associate Graeme MacDonald. The deal team at Santander UK was led by Valentina di Vito, legal advisory and structuring, Jamie Adams, senior manager and Jasmine Panesar, funding manager.