London Mutual Credit Union vs Santander: most-reported complaints compared
Most-reported issues at London Mutual Credit Union and Santander, according to reviewers on Trustpilot — classified by our automated reader and backed by verbatim quotes from distinct reviews. This is a side-by-side of what reviewers report, not a score, rating or recommendation for either company.
London Mutual Credit Union
TrustScore 4.7 · 2,815 reviews on Trustpilot.
250 reviews analysed, 2023-07-03 to 2026-09-02.
Complaint rate (recent window): 4%
80% of negative reviews get a company reply.
“they lied about the amount I was offered and now refuse to transfer my funds”
Santander
TrustScore 3.5 · 12,437 reviews on Trustpilot.
1,554 reviews analysed, 2025-02-02 to 2026-09-23.
Complaint rate (recent window): 22%
50% of negative reviews get a company reply.
“I spent 2 hours on phone with no joy trying to unblock my card”
Reported on both
Issues with an evidenced category (at least two verbatim quotes) on both sides.
| Issue | London Mutual Credit Union | Santander |
|---|---|---|
| Support unhelpful | 33% | 39% |
| Other | 24% | 6% |
| Account/app problems | 14% | 35% |
| Support unreachable | 12% | 36% |
| Billing errors | 10% | 7% |
Method: reviews are classified into a fixed complaint taxonomy by an automated reader; every category shown is backed by at least two verbatim quotes from distinct reviews. Figures are census classifications, not official statistics, and reflect what reviewers reported — not findings of wrongdoing by either company. Not affiliated with, endorsed by, or sponsored by Trustpilot A/S, London Mutual Credit Union or Santander.