Santander is facing legal action after it attempted to require its newly acquired TSB workforce to work from the office three days a week. The TBU Union is preparing to bring a case before the Employment Tribunal, arguing that the policy fails to accommodate personal and medical circumstances.
Dispute Over Return-to-Office Mandate
The banking giant, which completed a £2.6bn takeover of TSB in July, has told TSB employees they must attend the office at least three days per week starting from April 2027. The mandate applies to all TSB staff, who are accustomed to more flexible working arrangements. The union contends that the abrupt change does not allow sufficient time for employees to adjust their home and care commitments.
According to The Times, the TBU Union has formally notified Santander of its intent to litigate, citing concerns that the policy disproportionately affects workers with medical conditions or caring responsibilities. The union is seeking either a reversal of the mandate or reasonable accommodations for affected staff.
Impact of the TSB Takeover
The acquisition has made Santander the third-largest bank in the UK by personal current account deposits, behind Lloyds and NatWest. TSB serves approximately 5 million customers through 175 branches and employs around 5,000 staff. Santander UK itself has about 14 million customers, 350 branches, and 18,000 employees, though recent job cuts have reduced that number.
The Communication Workers Union (CWU), which represents Santander UK staff, had earlier expressed concerns about potential branch closures and job losses. In a statement at the time of the takeover, the CWU said it was “fully committed to minimising job losses” and wanted “staff to be given retraining, reskilling and redeployment opportunities where this is possible.” The union added: “We believe Santander UK should be doing everything it can to protect its workforce and the local economy. We will remain engaged with the bank to help our members achieve their desired outcomes.”
Santander’s Strategic Rationale
Banco Santander’s executive chair, Ana Botín, defended the takeover as a strategic move. “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,” she said. “It strengthens our franchise in a core market through the acquisition of a low-risk and complementary business that adds to our diversification.”
Santander has not yet commented on the legal action. The Employment Tribunal case is expected to be heard in 2027, and the outcome could set a precedent for post-merger workplace policies in the UK banking sector.



