Santander to Acquire TSB in £2.6bn Deal, Cementing UK Commitment
Santander has agreed a £2.6 billion deal to acquire TSB from Spanish rival Banco Sabadell, a move that strengthens the bank’s long-term position in the UK market after previous uncertainty over its commitment to the region.
Announced on Tuesday, the acquisition includes TSB’s 218 branches and approximately five million customers, marking a major step in Santander’s strategy to expand its presence and challenge the UK’s “big four” banks—Barclays, HSBC, Lloyds Banking Group, and NatWest.
The transaction is valued at an initial £2.65 billion, with an additional £230 million in potential payments, depending on future performance.
The deal quells speculation that Santander might exit the UK, a rumour fuelled by concerns over regulatory burdens and the bank’s long-standing struggle to compete at scale. Ana Botín, Santander’s Executive Chair, described the acquisition as a reaffirmation of the bank’s UK strategy:
“The acquisition of TSB represents a continuing strategic commitment to our customers in the UK, offering a compelling opportunity that is financially attractive to our shareholders and aligned with Santander’s long-term objectives.”
“It strengthens our franchise in a core market through the acquisition of a low-risk and complementary business that adds to our diversification.”
With the deal, Santander will become the third-largest bank in the UK by personal current account balances, and the fourth-largest mortgage lender. TSB has been owned by Sabadell since 2015 but has struggled to gain market share.
The acquisition is expected to close in 2026, pending regulatory and shareholder approvals.

