Klarna UK
This number is listed by Klarna UK on its own website (Customer service (freephone)).
Source: “rate: 0203 005 0833 • Freephone: 0808 189 3333” (opens in a new tab). Checked 13 October 2026.
This could still be a scam call
Criminals can make their number look like a genuine one (this is called spoofing). If someone calls from this number and asks for money, bank details, a code or passwords, hang up. Then call Klarna UK back on the number on the back of your card, or call 159, which connects you to your bank.