The UK's Office of Financial Sanctions Implementation fined Citibank N.A.'s London branch £4.7 million for violations of Russia sanctions between February and November 2022, the largest penalty OFSI has issued since Russia's invasion of Ukraine.
The enforcement action marks the regulator's most significant fine in nearly three years. Citibank failed to conduct proper due diligence on transactions linked to Russian entities and individuals during the window when financial restrictions took effect. The bank processed payments without sufficient screening against the UK's expanded sanctions lists, which were updated repeatedly in the months after February 24, 2022.
OFSI operates under the Sanctions Act and enforces asset freezes, transaction bans, and trade restrictions imposed by the Foreign Office. The regulator has authority to levy penalties up to the greater of £20 million or 20 percent of turnover. Banks operating in London must screen all payments against designated persons lists and freeze accounts matching those names within hours of detection. Failure to do so, either through system gaps or missed manual reviews, triggers civil penalties.
Citi's breach involved multiple transaction corridors where Russian counterparties or beneficial owners should have triggered blocks. The bank's systems flaged some activity but staff failed to escalate or freeze accounts in time. No criminal charges resulted; OFSI penalties are civil enforcement tools. The £4.7 million figure falls well short of OFSI's ceiling but corresponds to the violation's scope and Citi's cooperation during the investigation.
The fine comes as UK regulators tighten sanctions compliance across the financial system. The Financial Conduct Authority and Prudential Regulation Authority have issued separate guidance requiring banks to audit historical transaction records for missed detections. Citi paid the penalty without admission of wrongdoing, a standard settlement form in UK financial enforcement.
This penalty is the largest OFSI fine since the Office issued £2.47 million to Standard Chartered in 2022 and £1.6 million to HSBC Holdings in 2020. OFSI now handles roughly 500 reports per month of suspected violations. Citi's London branch processes payments for global institutional clients and remains one of the largest correspondent banks in the City.
The regulator's enforcement capacity has expanded with dedicated staff and new powers under the Economic Crime Act of 2023, which raised penalties and shortened investigation timelines. Banks have until now faced fines measured in single-digit millions; larger sums require demonstrable, repeated system failures across multiple quarters or years of lax controls.
