Santander Headquarters Address, Head Office Location, and Contact Details
Santander UK plc is one of the United Kingdom’s largest retail and commercial banks, established on 11 January 2010 when Abbey National plc was combined with the savings business of Bradford & Bingley and Alliance & Leicester. The bank serves approximately 14 million personal and business customers across the UK through around 450 branches and a digital banking platform, employing over 20,000 people. Santander UK is a wholly owned subsidiary of Banco Santander S.A., the largest bank in the Eurozone by market capitalisation, which is headquartered in Madrid, Spain.
Quick Facts
Registered Office Address
Santander UK plc, 2 Triton Square, Regent’s Place, London, NW1 3AN, United Kingdom
Corporate Headquarters
Santander UK, 201 Grafton Gate East, Milton Keynes, MK9 1AN, United Kingdom
Head Office Phone Number
0800 389 7000
Personal Banking Customer Service Number
0800 9 123 123
Business Banking Customer Service Number
0800 731 6666
Online Banking Helpdesk Number
0800 028 4190
Fraud & Lost/Stolen Cards (24 hrs)
0800 9 123 123
Media Enquiries
mediarelations@santander.co.uk
Official Website
santander.co.uk
Industry
Retail Banking / Commercial Banking / Financial Services
Santander UK Head Office Address
Registered Office Address
Santander UK plc, 2 Triton Square, Regent’s Place, London, NW1 3AN, United Kingdom
Corporate Headquarters (Milton Keynes)
Santander UK, 201 Grafton Gate East, Milton Keynes, MK9 1AN, United Kingdom
Customer Correspondence Postal Address
Santander UK plc, PO Box 1125, Bradford, BD1 9PG
About the Santander UK Head Office
Glass-fronted entrance to the Santander building at 2 Triton Square, London, featuring the Santander logo and the number ‘2’.
Santander UK’s registered legal office is at 2 Triton Square in Regent’s Place, a major mixed-use development in the Euston area of central London, where the distinctive Santander logo has been a prominent landmark on the building’s facade since the bank was established in 2010. In March 2021, Santander UK announced that Milton Keynes would become its new primary corporate headquarters, with the bank investing £150 million into a state-of-the-art new campus at 201 Grafton Gate East, consolidating its UK office presence into six main locations: Milton Keynes, Belfast, Bradford, Glasgow, London, and Sheffield. The Milton Keynes campus is the largest of the six sites and serves as the operational heart of the UK business, housing the bank’s customer service, technology, risk, finance, and operations teams. Standard head office business hours are Monday to Friday, 9am to 5pm.
How to Contact Santander UK
For personal banking and general customer service
Call 0800 9 123 123 (free from UK landlines and mobiles) for all personal banking enquiries, including accounts, mortgages, credit cards, savings, and loans. Lines are available 24 hours a day, 7 days a week for fraud and lost or stolen card emergencies. For general banking queries, lines are open Monday to Friday 8am to 8pm, Saturday 8am to 6pm, and Sunday 9am to 5pm.
For business banking customer service
Call 0800 731 6666 for all Santander business banking enquiries, including business current accounts, loans, and commercial banking products.
For online banking technical helpdesk
Call 0800 028 4190 for all online and mobile banking technical issues, login problems, and digital service queries.
For fraud and lost or stolen cards (24 hours)
Call 0800 9 123 123, available 24 hours a day, 7 days a week. If you are calling from abroad, dial +44 1908 237 963.
For mortgage enquiries
Call 0800 783 9738 for all Santander UK mortgage enquiries, available Monday to Friday 8am to 6pm and Saturday 9am to 1pm.
For written correspondence
Write to Santander UK plc, PO Box 1125, Bradford, BD1 9PG for all written personal banking correspondence. For formal legal correspondence, write to Santander UK plc, 2 Triton Square, Regent’s Place, London, NW1 3AN.
For press and media enquiries
Email mediarelations@santander.co.uk. The Santander press office operates from 8:00am to 6:00pm Monday to Friday. For out-of-hours media calls, dial 0800 587 7708.
For investor relations
Visit santander.co.uk/about-santander/investor-relations or write to the registered office at 2 Triton Square, Regent’s Place, London, NW1 3AN.
For FCA-regulated financial service complaints (escalated)
Write to Exchange Tower, London, E14 9SR, call 0800 023 4567, or email complaint.info@financial-ombudsman.org.uk for Financial Ombudsman Service escalations if your complaint is unresolved after eight weeks.
Frequently Asked Questions
Where is the Santander UK head office?
Santander UK’s registered office is at 2 Triton Square, Regent’s Place, London, NW1 3AN. Its primary corporate headquarters, however, is at 201 Grafton Gate East, Milton Keynes, MK9 1AN, which became the bank’s main UK base following a £150 million investment announced in 2021.
What is the Santander UK customer service number?
The main Santander UK personal banking customer service number is 0800 9 123 123, available 24/7 for fraud and card emergencies. For general banking queries, lines are open Monday to Friday 8am to 8pm, Saturday 8am to 6pm, and Sunday 9am to 5pm.
What is the Santander UK head office phone number?
The main Santander UK head office number is 0800 389 7000. For personal banking, call 0800 9 123 123, and for business banking, call 0800 731 6666.
Is Santander UK a British bank?
Santander UK plc is a British-registered bank incorporated and regulated in England and Wales, but it is a wholly owned subsidiary of Banco Santander S.A., a Spanish banking group headquartered in Madrid. It operates independently under UK regulation by the PRA and FCA.
Is Santander acquiring TSB?
Yes. Santander UK agreed to acquire TSB Banking Group plc from Banco Sabadell for £2.65 billion in July 2025, a deal subject to regulatory approval. The integration of TSB into Santander UK is expected to be a multi-year process and was one of the key factors in the succession planning that led to Mahesh Aditya’s appointment as CEO.
How do I make a formal complaint to Santander?
Call 0800 9 123 123 or write to Santander UK plc, PO Box 1125, Bradford, BD1 9PG. Santander has eight weeks to resolve a complaint under FCA rules. If unresolved after eight weeks, you can escalate to the Financial Ombudsman Service at Exchange Tower, London, E14 9SR, or call 0800 023 4567