Santander Complaints
Santander receives more complaints than most banks.
What customers experience
Santander received 258,774 complaints in the 2025-07-01 to 2025-12-31 reporting period -- that is roughly 2.6 complaints per 1,000 accounts, which is below the sector average of 8.1. Compared to other banks, Santander receives fewer complaints per customer.
Total Complaints
258,774
In 2025-07-01 to 2025-12-31
Rate (per 1,000 accounts)
2.6 →
Sector Average
8.1
per 1,000 accounts
Complaints by Product
| Product ↕ | Complaints ↕ | Share |
|---|---|---|
| Banking and credit cards | 122,914 | 47.5% |
| Home finance | 8,368 | 3.2% |
| Insurance & pure protection | 201 | 0.1% |
| Investments | 184 | 0.1% |
| Decumulation & pensions | 37 | 0.0% |
How does Santander compare?
Complaint rate per 1,000 accounts
How to Complain About Santander
Complaints Contact Details
Phone
0800 171 2171Post
Santander Customer Complaints, Santander House, 201 Grafton Gate East, Milton Keynes, MK9 1AN
Online Form
Submit complaint online →Steps to Escalate Your Complaint
Contact Santander complaints team
Call 0800 171 2171, visit a branch, or submit a complaint online. Santander will acknowledge your complaint within 5 working days.
Wait for a final response or request a deadlock letter
Santander has 8 weeks to resolve your complaint. If you receive a final response you disagree with, or the deadline passes, you can escalate.
Escalate to the Financial Ombudsman Service
If your complaint is unresolved after 8 weeks, or you have a final response letter, contact the Financial Ombudsman at financial-ombudsman.org.uk or call 0800 023 4567.
Need to write a complaint letter?
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Santander must respond to your complaint within 8 weeks. If they don't resolve it, you can escalate to the Financial Ombudsman Service.
Bottom Line
Santander receives more complaints than most banks, which is worth knowing if you are thinking about switching. Existing customers who have had problems should know that the data backs up their experience -- you are not being unreasonable. Consider using our complaint letter generator below.
About This Data
Data sourced from official UK regulators for the period 2025-07-01 to 2025-12-31. Complaint rates are calculated per 1,000 accounts. Ombudsman uphold rate from the Financial Ombudsman Service. Full methodology